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Peer-reviewed papers
@article{2007PhRvL..99e2502T,
title = {{New Determination of the Astrophysical S Factor S$_{E1}$ of the $^{12}$C({$alpha$},{$gamma$})$^{16}$O Reaction}},
author = {{Tang}, X.~D. and {Rehm}, K.~E. and {Ahmad}, I. and {Brune}, C.~R. and {Champagne}, A. and {Greene}, J.~P. and {Hecht}, A.~A. and {Henderson}, D. and {Janssens}, R.~V.~F. and {Jiang}, C.~L. and {Jisonna}, L. and {Kahl}, D. and {Moore}, E.~F. and {Notani}, M. and {Pardo}, R.~C. and {Patel}, N. and {Paul}, M. and {Savard}, G. and {Schiffer}, J.~P. and {Segel}, R.~E. and {Sinha}, S. and {Shumard}, B. and {Wuosmaa}, A.~H. },
journal = {Physical Review Letters},
year = {2007},
month = aug,
number = {5},
pages = {052502:1-4},
volume = {99},
abstract = {A new measurement of the $beta$-delayed $alpha$ decay of $^{16}$N has been performed using a set of high efficiency ionization chambers. Sources were made by implantation of a $^{16}$N beam, yielding very clean $alpha$ spectra down to energies as low as 400 keV. Our data are in good agreement with earlier results. For the S factor S$_{E1}$, we obtain a value of 74 ± 21 keVb. In spite of improvements in the measurement, the error in S$_{E1}$ remains relatively large because of the correlations among the fit parameters and the uncertainties inherent to the extrapolation.},
adsurl = {http://adsabs.harvard.edu/abs/2007PhRvL..99e2502T},
doi = {10.1103/PhysRevLett.99.052502}
}
@article{2010.Aram.14O,
title = {Direct Measurement of the $^{14}$O($alpha$,$alpha$)$^{14}$O Cross Section for Astrophysically Important $^{14}$O + $alpha$ Resonances},
author = {{Kim}, A. and {Lee}, N. H. and {Hahn}, I. S. and {Yoo}, J. S. and {Han}, M. H. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Wakabayashi}, Y. and {Binh}, D. and {Hashimoto}, H. and {Kawabata}, T. and {Kahl}, D. and {Kurihara}, Y. and {Kwon}, Y. K. and {Teranishi}, T. and {Kato}, S. and {Komatsubara}, T. and {Guo}, B. and {Bing}, G. and {Liu}, W. and {Wang}, Y.},
journal = {Journal of the Korean Physical Society},
year = {2010},
pages = {40--43},
volume = {57},
abstract = {For the study of astrophysically important states in $^{18}$Ne, the $^{14}$O($alpha$,$alpha$)$^{14}$O cross section was measured ininverse kinematics using a radioactive $^{14}$O beam. This reactionwas investigated for properties of resonant states of $^{18}$Ne for determining the $^{14}$O($alpha$,p)$^{17}$F reaction rate, which isone of the most important reactions for understanding the breakoutmechanism from the Hot CNO cycle to the rp-process. Alpha inducedelastic scattering on $^{14}$O was performed using the low-energy RI beam separator at Center for Nuclear Study, in the RIKEN Accelerator Research Facility. The energy range $E_{x}= 7.2 sim 13.1{}$ MeV of $^{18}$Ne was scanned with the thick target method. Recoiled alpha particles were measured with Si dE-E telescopes. Spins and widths of three resonances at $E_x$ = 8.6, 9.22, and 10.06 MeV were calculated using the R-matrix analysis and a new state of $^{18}$Ne at $E_{x}=12.0$ MeV was found in this experiment.},
doi = {10.3938/jkps.57.40 },
owner = {daid},
timestamp = {2010.07.17}
}
@article{2010PhRvC..82b2801S,
title = {{Structure of $^{30}$S with $^{32}$S(p,t)$^{30}$S and the thermonuclear $^{29}$P(p,{$gamma$})$^{30}$S reaction rate}},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Chen}, J. and {Clark}, J.~A. and {Deibel}, C.~M. and {Geraedts}, S.~D. and {Kahl}, D. and {Parker}, P.~D. and {Seiler}, D. and {Wrede}, C.},
journal = {prc},
year = {2010},
month = aug,
number = {2},
pages = {022801:1-5},
volume = {82},
abstract = {The structure of proton unbound $^{30}$S states is important for determining the $^{29}$P(p,$gamma$)$^{30}$S reaction rate, which influences explosive hydrogen burning in classical novae and type I x-ray bursts. The reaction rate in this temperature regime had been previously predicted to be dominated by two low-lying, unobserved, J$pi$= 3$^{+}$ and 2$^{+}$ resonances above the proton threshold in $^{30}$S. To search for these levels, the structure of $^{30}$S was studied using the $^{32}$S(p,t)$^{30}$S transfer reaction with a magnetic spectrograph. We have confirmed a previous detection of a state near 4700 keV, which had tentatively been assigned J$pi$=3$^{+}$. We have also discovered a new state at 4814(3) keV, which is a strong candidate for the other important resonance (J$pi$=2$^{+}$). The new $^{29}$P(p,$gamma$)$^{30}$S reaction rate is up to 4-20 times larger than previously determined rates over the relevant temperature range. The uncertainty in the reaction rate due to uncertainties in the resonance energies has been significantly reduced.},
adsurl = {http://adsabs.harvard.edu/abs/2010PhRvC..82b2801S},
doi = {10.1103/PhysRevC.82.022801},
keywords = {Explosive burning in accreting binary systems, Transfer reactions, 20{lt}=A{lt}=38, Stellar structure, interiors, evolution, nucleosynthesis, ages}
}
@article{2010PhRvC..81d5809T,
title = {{Determination of the E1 component of the low-energy $^{12}$C({$alpha$},{$gamma$})$^{16}$O cross section}},
author = {{Tang}, X.~D. and {Rehm}, K.~E. and {Ahmad}, I. and {Brune}, C.~R. and {Champagne}, A. and {Greene}, J.~P. and {Hecht}, A. and {Henderson}, D.~J. and {Janssens}, R.~V.~F. and {Jiang}, C.~L. and {Jisonna}, L. and {Kahl}, D. and {Moore}, E.~F. and {Notani}, M. and {Pardo}, R.~C. and {Patel}, N. and {Paul}, M. and {Savard}, G. and {Schiffer}, J.~P. and {Segel}, R.~E. and {Sinha}, S. and {Wuosmaa}, A.~H.},
journal = {prc},
year = {2010},
month = apr,
number = {4},
pages = {045809:1-14},
volume = {81},
abstract = {A measurement of the {$beta$}-delayed {$alpha$} decay of $^{16}$N using a set of twin ionization chambers is described. Sources were made by implantation, using a $^{16}$N beam produced via the In-Flight Technique. The energies and emission angles of the $^{12}$C and {$alpha$} particles were measured in coincidence and very clean {$alpha$} spectra, down to energies of 450 keV, were obtained. The structure of the spectra from this experiment is in good agreement with results from previous measurements. An analysis of our data with the same input parameters as used in earlier studies gives S$_{E1}$(300)=86±22 keVb for the E1 component of the S-factor. This value is in excellent agreement with results obtained from various direct and indirect measurements. In addition, the influence of new measurements including the phase shift data from Tischhauser on the value of S$_{E1}$(300) is discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2010PhRvC..81d5809T},
doi = {10.1103/PhysRevC.81.045809},
keywords = {Single-particle levels and strength functions, Alpha decay, ^{3}H-, ^{3}He-, and ^{4}He-induced reactions, Hydrostatic stellar nucleosynthesis}
}
@article{PhysRevC.83.018803,
title = {Spins and parities of astrophysically important $^{30}S$ states from $^{28}$Si($^{3}$He, n$gamma{}$)$^{30}$S},
author = {{Setoodehnia}, K. and {Chen}, A. A. and {Komatsubara}, T. and {Kubono}, S. and {Binh}, D.~N. and {Carpino}, J.~F. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, T. and {Ishibashi}, Y. and {Ito}, Y. and {Kahl}, D. and {Moriguchi}, T. and {Ooishi}, H. and {Ozawa}, A. and {Shizuma}, T. and {Sugiyama}, Y. and {Yamaguchi}, H.},
journal = {prc},
year = {2011},
month = {Jan},
number = {1},
pages = {018803:1-4},
volume = {83},
abstract = {The structure of proton-unbound $^{30}$S states strongly determines the thermonuclear $^{29}$P(p,$gamma$)$^{30}$S reaction rate at temperatures characteristic of explosive hydrogen burning in classical novae and type I x-ray bursts. Specifically, the rate had been previously predicted to be dominated by two low-lying, unobserved, levels in the E$_{x}$= 4.7–4.8 MeV region, with spin and parity assignments of 3$^{+}$ and 2$^{+}$. In recent experimental work, two candidate levels were observed with energies of 4.699 MeV and 4.814 MeV, but no experimental information on their spins and parities was obtained. We have performed an in-beam $gamma$-ray spectroscopy study of $^{30}$S with the $^{28}$Si($^{3}$He, n$gamma$)$^{30}$S reaction. By constructing the decay schemes of proton-unbound states with a $gamma$-$gamma$ coincidence analysis of their decay $gamma$ rays, their J$pi$ values were inferred from a comparison to the known decay schemes of the corresponding mirror states in $^{30}$Si. For the two aforementioned states, our results strongly corroborate the spin-parity assignments assumed in recent evaluations of the $^{29}$P(p,$gamma$)$^{30}$S reaction rate.},
doi = {10.1103/PhysRevC.83.018803},
numpages = {4},
publisher = {American Physical Society}
}
@article{2011PhRvC..83c4306Y,
title = {{{$alpha$} resonance structure in $^{11}$B studied via resonant scattering of $^{7}$Li+{$alpha$}}},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S. and {Wakabayashi}, Y. and {Kawabata}, T. and {Teranishi}, T.},
journal = {prc},
year = {2011},
month = mar,
number = {3},
pages = {034306:1-10},
volume = {83},
abstract = {{A new measurement of {$alpha$} resonant scattering on $^{7}$Li was performed over the excitation energy of 10.2--13.0 MeV in $^{11}$B at the low-energy RI beam facility CNS Radioactive Ion Beam separator (CRIB) of the Center for Nuclear Study (CNS), University of Tokyo. The excitation function of $^{7}$Li+{$alpha$} at 180$^{circ}$ in the center-of-mass system was successfully measured for the first time with the inverse kinematics method, providing important information on the {$alpha$} cluster structure in $^{11}$B and the reaction rate of $^{7}$Li({$alpha$},{$gamma$}), which is relevant to the $^{11}$B production in the {$nu$} process in core-collapse supernovae. The excitation function of the $^{7}$Li({$alpha$},p) reaction cross section for 11.7--13.1 MeV was also measured. }},
adsurl = {http://adsabs.harvard.edu/abs/2011PhRvC..83c4306Y},
doi = {10.1103/PhysRevC.83.034306},
keywords = {^{3}H-, ^{3}He-, and ^{4}He-induced reactions, Cluster models, Resonance reactions, 6{lt}=A{lt}=19}
}
@article{2012PhRvC..85a5805C,
title = {{Strong $^{25}$Al+p resonances via elastic proton scattering with a radioactive $^{25}$Al beam}},
author = {{Chen}, J. and {Chen}, A.~A. and {Am{'a}dio}, G. and {Cherubini}, S. and {Fujikawa}, H. and {Hayakawa}, S. and {He}, J.~J. and {Iwasa}, N. and {Kahl}, D. and {Khiem}, L.~H. and {Kubono}, S. and {Kurihara}, S. and {Kwon}, Y.~K. and {La Cognata}, M. and {Moon}, J.~Y. and {Niikura}, M. and {Nishimura}, S. and {Pearson}, J. and {Pizzone}, R.~G. and {Teranishi}, T. and {Togano}, Y. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {prc},
year = {2012},
month = jan,
number = {1},
pages = {015805},
volume = {85},
abstract = {{$^{25}$Al+p elastic scattering in inverse kinematics was measured to explore the level structure of $^{26}$Si above its proton threshold. The $^{2}$H($^{24}$Mg,n)$^{25}$Al reaction was used to produce a 3.4 MeV/nucleon $^{25}$Al radioactive beam with intensities of about 10$^{6}$ ions per second on target. By using a thick target of (CH$_{2}$)$_{n}$, a center-of-mass energy range of 3 MeV was scanned, reaching up to about 8.5 MeV in excitation energy in $^{26}$Si. This energy range covered the region of importance for the $^{25}$Al(p,{$gamma$})$^{26}$Si at temperatures characteristic of explosive nucleosynthesis. Level parameters of six strong s-wave $^{25}$Al+p resonances in $^{26}$Si were extracted from fits to the measured excitation functions using the R-matrix formalism. Two new levels have been discovered, while for two others, our spin-parity assignments disagree with the results of some previous studies. Lastly, our resonance parameters for the remaining two levels are in good agreement with past experimental work, and with recent shell-model calculations. }},
adsurl = {http://adsabs.harvard.edu/abs/2012PhRvC..85a5805C},
doi = {10.1103/PhysRevC.85.015805},
eid = {015805},
keywords = {gamma transitions and level energies, Nucleosynthesis in novae, supernovae, and other explosive environments, Radiative capture, 20{lt}=A{lt}=38}
}
@article{PhysRevC.85.045809,
title = {$^{26}$Si excited states via one-neutron removal from a $^{27}$Si radioactive ion beam},
author = {{Chen}, J. and {Chen}, A.~A. and {Amthor}, A.~M. and {Bazin}, D. and {Becerril}, A.~D. and {Gade}, A. and {Galaviz}, D. and {Glasmacher}, T. and {Kahl}, D. and {Lorusso}, G. and {Matos}, M. and {Ouellet}, C.~V. and {Pereira}, J. and {Schatz}, H. and {Smith}, K. and {Wales}, B. and {Weisshaar}, D. and {Zegers}, R.~G.~T.},
journal = {prc},
year = {2012},
month = {Apr},
pages = {045809},
volume = {85},
abstract = {A study of $^{26}$Si states by neutron removal from a fast radioactive beam of $^{27}$Si has been performed. A beam of $^{27}$Si of energy 84.3 MeV/nucleon impinged on a polypropylene foil (C$_{3}$H$_{6}$) of 180 mg/cm$^{2}$ thickness. Deexcitation $gamma$ rays were detected with a highly segmented germanium detector array, in coincidence with the $^{26}$Si recoils, and the corresponding $^{26}$Si level energies were determined. In comparing our results to two previous $gamma$-ray spectroscopic studies of $^{26}$Si level structures, we find good agreement with a recent measurement of the $^{12}$C($^{16}$O,2n$gamma$)$^{26}$Si reaction. Our results support the use of excitation energies from that study in helping determine the important resonance energies for the thermonuclear $^{25}$Al(p,$gamma$)$^{26}$Si reaction rate. We do not observe a bound state at 4093 keV reported in an earlier study of the $^{24}$Mg($^{3}$He,n$gamma$)$^{26}$Si reaction.},
doi = {10.1103/PhysRevC.85.045809},
issue = {4},
numpages = {5},
publisher = {American Physical Society}
}
@article{2012PhRvC..85c4313I,
title = {{Isobaric analog resonances of the N=21 nucleus $^{35}$Si}},
author = {{Imai}, N. and {Hirayama}, Y. and {Watanabe}, Y.~X. and {Teranishi}, T. and {Hashimoto}, T. and {Hayakawa}, S. and {Ichikawa}, Y. and {Ishiyama}, H. and {Jeong}, S.~C. and {Kahl}, D. and {Kubono}, S. and {Miyatake}, H. and {Ueno}, H. and {Yamaguchi}, H. and {Yoneda}, K. and {Yoshimi}, A.
},
journal = {prc},
year = {2012},
month = mar,
number = {3},
pages = {034313},
volume = {85},
abstract = {{Neutron single-particle states in the neutron-rich nucleus $^{35}$Si, which is located beside the N=20 shell breaking nucleus $^{32}$Mg, were investigated through their isobaric analog resonances. The excitation function for $^{34}$Si+p elastic scattering was measured around 0$^{o}$ in the laboratory frame by the thick target inverse kinematics method with a $^{34}$Si beam around 5 MeV/nucleon and a thick polyethylene target. Eight resonances were successfully observed. Angular momenta and proton and total widths of the resonances were assigned using R-matrix analysis. With the help of information of the {$beta$} decay study, six isobaric analog resonances were identified. Spectroscopic factors and spin-parities of the corresponding parent states in $^{35}$Si are presented. }},
adsurl = {http://adsabs.harvard.edu/abs/2012PhRvC..85c4313I},
doi = {10.1103/PhysRevC.85.034313},
eid = {034313},
keywords = {Spectroscopic factors and asymptotic normalization coefficients, Spin, parity, and isobaric spin, Resonance reactions, Elastic scattering}
}
@article{2012PhRvC..85d5802J,
title = {{Experimental study of resonant states in $^{27}$P via elastic scattering of $^{26}$Si+p}},
author = {{Jung}, H.~S. and {Lee}, C.~S. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Lee}, J.~H. and {Yun}, C.~C. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Kahl}, D. and {Hayakawa}, S. and {Choi}, S. and {Kim}, M.~J. and {Kim}, Y.~H. and {Kim}, Y.~K. and {Park}, J.~S. and {Kim}, E.~J. and {Moon}, C.-B. and {Teranishi}, T. and {Wakabayashi}, Y. and {Iwasa}, N. and {Yamada}, T. and {Togano}, Y. and {Kato}, S. and {Cherubini}, S. and {Rapisarda}, G.~G.},
journal = {prc},
year = {2012},
month = apr,
number = {4},
pages = {045802},
volume = {85},
abstract = {{Proton resonant states in $^{27}$P were studied by the resonant elastic scattering of $^{26}$Si+p with a $^{26}$Si radioactive ion beam bombarding a thick H$_{2}$ gas target with the inverse kinematics method. The properties of these resonance states are important to better constrain the production rates of the $^{26}$Si(p,{$gamma$})$^{27}$P reaction. This is one of the astrophysically important reactions needed to understand proton-rich nucleosynthesis such as the galactic production of $^{26}$Al and energy generation in explosive stellar environments. Although there are recent studies on the resonant structure in $^{27}$P, large uncertainties remain, and only a few levels are known. In this work, resonant states were observed over the excitation energies range of 2.3 to 3.8 MeV with high statistics and without background contamination within the target. The resonance parameters were extracted by an R-matrix analysis of the excitation function. The $^{26}$Si(p,{$gamma$})$^{27}$P stellar reaction rate has been evaluated, including high-lying resonances found in this work. }},
adsurl = {http://adsabs.harvard.edu/abs/2012PhRvC..85d5802J},
doi = {10.1103/PhysRevC.85.045802},
eid = {045802},
keywords = {Resonance reactions, gamma transitions and level energies, Nucleosynthesis in novae, supernovae, and other explosive environments, 20{lt}=A{lt}=38}
}
@article{2013NIMPA.723...99D,
title = {{Low-energy radioactive ion beam production of $^{22}$Mg}},
author = {{Duy}, N.~N. and {Kubono}, S. and {Yamaguchi}, H. and {Kahl}, D. and {Wakabayashi}, Y. and {Teranishi}, T. and {Iwasa}, N. and {Kwon}, Y.~K. and {Khiem}, L.~H. and {Kim}, Y.~H. and {Song}, J.~S. and {Hu}, J. and {Ayyad}, Y.},
journal = {Nuclear Instruments and Methods in Physics Research A},
year = {2013},
month = sep,
pages = {99-101},
volume = {723},
abstract = {{The $^{22}$Mg nucleus plays an important role in nuclear astrophysics, specially in the $^{22}$Mg({$alpha$},p)$^{25}$Al and proton capture $^{22}$Mg(p,{$gamma$})$^{23}$Al reactions. It is believed that $^{22}$Mg is a waiting point in the {$alpha$}p-process of nucleosynthesis in novae. We proposed a direct measurement of the $^{22}$Mg+{$alpha$} resonance reaction in inverse kinematics using a radioactive ion (RI) beam. A $^{22}$Mg beam of 3.73 MeV/u was produced at CRIB (Center for Nuclear Study (CNS) low-energy RI Beam) facility of the University of Tokyo located at RIKEN (Japan) in 2011. In this paper we present the results about the production of the $^{22}$Mg beam used for the direct measurement of the scattering reaction $^{22}$Mg({$alpha$},{$alpha$})$^{22}$Mg, and the stellar reaction $^{22}$Mg({$alpha$},p)$^{25}$Al in the energy region concerning an astrophysical temperature of T$_{9}$=1-3 GK. }},
adsurl = {http://adsabs.harvard.edu/abs/2013NIMPA.723...99D},
doi = {10.1016/j.nima.2013.05.026}
}
@article{PhysRevC.87.015803,
title = {{Determination of astrophysical $^{12}$N(p,$gamma$)$^{13}$O reaction rate from the $^{2}$H($^{12}$N, $^{13}$O)n reaction and its astrophysical implications}},
author = {{Guo}, B. and {Su}, J. and {Li}, Z. and {Wang}, Y.~B. and {Yan}, S.~Q. and {Li}, Y.~J. and {Shu}, N.~C. and {Han}, Y.~L. and {Bai}, X.~X. and {Chen}, Y.~S. and {Liu}, W.~P. and {Yamaguchi}, H. and {Binh}, D.~N. and {Hashimoto}, T. and {Hayakawa}, S. and {Kahl}, D. and {Kubono}, S. and {He}, J.~J. and {Hu}, J. and {Xu}, S.~W. and {Iwasa}, N. and {Kume}, N. and {Li}, Z.},
journal = {prc},
year = {2013},
month = nov,
pages = {015803},
volume = {87},
abstract = {The evolution of massive stars with very low-metallicities depends critically on the amount of CNO nuclides which they produce. The $^{12}$N(p,$gamma$)$^{13}$O reaction is an important branching point in the rap processes, which are believed to be alternative paths to the slow 3α process for producing CNO seed nuclei and thus could change the fate of massive stars. In the present work, the angular distribution of the $^{2}$H($^{12}$N, $^{13}$O)n proton transfer reaction at E$_{c.m.}$=8.4 MeV has been measured for the first time. Based on the Johnson-Soper approach, the square of the asymptotic normalization coefficient (ANC) for the virtual decay of $^{13}$O$_{g.s.}$ → $^{12}$N+p was extracted to be 3.92 ± 1.47 fm$^{-1}$ from the measured angular distribution and utilized to compute the direct component in the $^{12}$N(p,$gamma$)$^{13}$O reaction. The direct astrophysical S factor at zero energy was then found to be 0.39 ± 0.15 keV b. By considering the direct capture into the ground state of $^{13}$O, the resonant capture via the first excited state of $^{13}$O and their interference, we determined the total astrophysical S factors and rates of the $^{12}$N(p,$gamma$)$^{13}$O reaction. The new rate is two orders of magnitude slower than that from the REACLIB compilation. Our reaction network calculations with the present rate imply that $^{12}$N(p,$gamma$)$^{13}$O will only compete successfully with the $beta^{+}$ decay of $^{12}$N at higher (∼2 orders of magnitude) densities than initially predicted.},
adsurl = {http://adsabs.harvard.edu/abs/2012arXiv1211.4972G},
archiveprefix = {arXiv},
doi = {10.1103/PhysRevC.87.015803},
eprint = {1211.4972},
issue = {1},
keywords = {Nuclear Experiment},
primaryclass = {nucl-ex}
}
@article{2013PhRvC..88a2801H,
title = {{The $^{18}$Ne({$alpha$},p)$^{21}$Na breakout reaction in x-ray bursts: Experimental determination of spin-parities for {$alpha$} resonances in $^{22}$Mg via resonant elastic scattering of $^{21}$Na+p}},
author = {{He}, J.~J. and {Zhang}, L.~Y. and {Parikh}, A. and {Xu}, S.~W. and {Yamaguchi}, H. and {Kahl}, D. and {Kubono}, S. and {Hu}, J. and {Ma}, P. and {Chen}, S.~Z. and {Wakabayashi}, Y. and {Sun}, B.~H. and {Wang}, H.~W. and {Tian}, W.~D. and {Chen}, R.~F. and {Guo}, B. and {Hashimoto}, T. and {Togano}, Y. and {Hayakawa}, S. and {Teranishi}, T. and {Iwasa}, N. and {Yamada}, T. and {Komatsubara}, T.},
journal = {prc},
year = {2013},
month = jul,
number = {1},
pages = {012801},
volume = {88},
abstract = {{The $^{18}$Ne({$alpha$},p)$^{21}$Na reaction provides a pathway for breakout from the hot CNO cycles to the rp process in type-I x-ray bursts. To better determine this astrophysical reaction rate, the resonance parameters of the compound nucleus $^{22}$Mg have been investigated by measuring the resonant elastic scattering of $^{21}$Na+p. An 89 MeV $^{21}$Na radioactive ion beam was produced at the CNS Radioactive Ion Beam Separator and bombarded an 8.8 mg/cm$^{2}$ thick polyethylene target. The recoiled protons were measured at scattering angles of {theta}$_{c.m.}${approx}175$^{o}$ and 152$^{o}$ by three {$Delta$}E-E silicon telescopes. The excitation function was obtained with a thick-target method over energies E$_{x}$($^{22}$Mg) = 5.5--9.2 MeV. The resonance parameters have been determined through an R-matrix analysis. For the first time, the J$^{pi}$ values for ten states above the {$alpha$} threshold in $^{22}$Mg have been experimentally determined in a single consistent measurement. We have made three new J$^{pi}$ assignments and confirmed seven of the ten tentative assignments in the previous work. The $^{18}$Ne({$alpha$},p)$^{21}$Na reaction rate has been recalculated, and the astrophysical impact of our new rate has been investigated through one-zone postprocessing x-ray burst calculations. We find that the $^{18}$Ne({$alpha$},p)$^{21}$Na rate significantly affects the peak nuclear energy generation rate and the onset temperature of this breakout reaction in these phenomena. }},
adsurl = {http://adsabs.harvard.edu/abs/2013PhRvC..88a2801H},
archiveprefix = {arXiv},
doi = {10.1103/PhysRevC.88.012801},
eid = {012801},
eprint = {1301.4283},
keywords = {Reactions induced by unstable nuclei, Decay by proton emission, Nuclear physics aspects of novae, supernovae, and other explosive environments, 20{lt}=A{lt}=38},
primaryclass = {astro-ph.SR}
}
@article{2013PhRvC..88c5801J,
title = {{Resonant scattering of $^{22}$Na + p studied by the thick-target inverse-kinematic method}},
author = {{Jin}, S.~J. and {Wang}, Y.~B. and {Su}, J. and {Yan}, S.~Q. and {Li}, Y.~J. and {Guo}, B. and {Li}, Z.~H. and {Zeng}, S. and {Lian}, G. and {Bai}, X.~X. and {Liu}, W.~P. and {Yamaguchi}, H. and {Kubono}, S. and {Hu}, J. and {Kahl}, D. and {Jung}, H.~S. and {Moon}, J.~Y. and {Lee}, C.~S. and {Teranishi}, T. and {Wang}, H.~W. and {Ishiyama}, H. and {Iwasa}, N. and {Komatsubara}, T. and {Brown}, B.~A.},
journal = {prc},
year = {2013},
month = sep,
number = {3},
pages = {035801},
volume = {88},
abstract = {{Background: In presolar low-density graphite grains, an extraordinarily large $^{22}$Ne/$^{20}$Ne ratio or even nearly pure $^{22}$Ne is found, pointing to the condensation of radioactive $^{22}$Na in grains. Supernovae and neon-rich novae are the main events that produce $^{22}$Na via the explosive hydrogen burning process. The $^{22}$Na(p, {$gamma$})$^{23}$Mg reaction is one of the key reactions that influences the $^{22}$Na abundance in ejecta.Purpose:The present work aims to explore the proton resonant states in $^{23}$Mg relevant to the astrophysical $^{22}$Na(p, {$gamma$})$^{23}$Mg reaction. The determined $^{23}$Mg resonant parameters can be used to evaluate the $^{22}$Na(p, {$gamma$})$^{23}$Mg reaction rate.Method:A low-energy $^{22}$Na radioactive ion beam is produced via the $^{1}$H($^{22}$Ne, $^{22}$Na)n reaction, and used to measure the experimental excitation function of the $^{22}$Na + p resonant scattering with a conventional thick-target inverse kinematic method. R-matrix analysis is applied to deduce the $^{23}$Mg resonance parameters from the experimental excitation function.Results: Three proton resonance states in $^{23}$Mg are observed. Spins/parities and the proton partial widths are determined. The deduced excitation energies agree with the compiled values.Conclusions: The new spin and parity assignments allow us to perform a shell-model calculation of the {$gamma$} widths of the $^{23}$Mg resonant states for the evaluation of the $^{22}$Na(p, {$gamma$})$^{23}$Mg astrophysical reaction rate. The two s-wave resonant states established in this work at 8.793 and 8.916 MeV in $^{23}$Mg, respectively, increase the total reaction rate by about 5% at a temperature greater than 2 GK. }},
adsurl = {http://adsabs.harvard.edu/abs/2013PhRvC..88c5801J},
doi = {10.1103/PhysRevC.88.035801},
eid = {035801},
keywords = {Reactions induced by unstable nuclei, Elastic proton scattering, Nuclear physics aspects of novae supernovae and other explosive environments, 20<, =A<, =38}
}
@article{2013PhRvC..87f5801S,
title = {{Nuclear structure of $^{30}$S and its implications for nucleosynthesis in classical novae}},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Kahl}, D. and {Komatsubara}, T. and {Jos{'e}}, J. and {Longland}, R. and {Abe}, Y. and {Binh}, D.~N. and {Chen}, J. and {Cherubini}, S. and {Clark}, J.~A. and {Deibel}, C.~M. and {Fukuoka}, S. and {Hashimoto}, T. and {Hayakawa}, T. and {Hendriks}, J. and {Ishibashi}, Y. and {Ito}, Y. and {Kubono}, S. and {Lennard}, W.~N. and {Moriguchi}, T. and {Nagae}, D. and {Nishikiori}, R. and {Niwa}, T. and {Ozawa}, A. and {Parker}, P.~D. and {Seiler}, D. and {Shizuma}, T. and {Suzuki}, H. and {Wrede}, C. and {Yamaguchi}, H. and {Yuasa}, T.},
journal = {prc},
year = {2013},
month = jun,
number = {6},
pages = {065801},
volume = {87},
abstract = {{{bf Background:} The uncertainty in the $^{29}$P(p,{$gamma$})$^{30}$S reaction rate over 0.1 {le} T {le} 1.3 GK was previously determined to span approximately four orders of magnitude due to the uncertain location of two previously unobserved 3$^{+}$ and 2$^{+}$ resonances in the E$_{x}$=4.7-4.8 MeV region in $^{30}$S. Therefore, the abundances of silicon isotopes synthesized in novae, which are relevant for the identification of presolar grains of putative nova origin, were uncertain by a factor of 3.\{bf Purpose:} (a) To investigate the level structure of $^{30}$S above the proton threshold [4394.9(7) keV] via charged-particle spectroscopy using the $^{32}$S(p,t)$^{30}$S reaction and in-beam {$gamma$}-ray spectroscopy using the $^{28}$Si($^{3}$He, n{$gamma$})$^{30}$S reaction to calculate the $^{29}$P(p,{$gamma$})$^{30}$S reaction rate. (b) To explore the impact of this rate on the abundances of silicon isotopes synthesized in novae.\{bf Methods:} Differential cross sections of the $^{32}$S(p,t)$^{30}$S reaction were measured at 34.5 MeV. Distorted-wave Born approximation calculations were performed to constrain the spin-parity assignments of the observed levels, including the two astrophysically important levels. An energy-level scheme was deduced from {$gamma$}-{$gamma$} coincidence measurements using the $^{28}$Si($^{3}$He, n{$gamma$})$^{30}$S reaction. Spin-parity assignments based on measurements of {$gamma$}-ray angular distributions and {$gamma$}-{$gamma$} directional correlation from oriented nuclei were made for most of the observed levels of $^{30}$S.\{bf Results:} The resonance energies corresponding to the states with 4.5 MeV {lsim} E$_{x}$ {lsim} 6 MeV, including the two astrophysically important states predicted previously, are measured with significantly better precision than before. The spin-parity assignments of both astrophysically important resonances are confirmed. The uncertainty in the rate of the $^{29}$P(p,{$gamma$})$^{30}$S reaction is substantially reduced over the temperature range of interest. Finally, the influence of this rate on the abundance ratios of silicon isotopes synthesized in novae are obtained via 1D hydrodynamic nova simulations.\{bf Conclusions:} The uncertainty in the $^{29}$P(p,{$gamma$})$^{30}$S reaction rate is reduced to the point that it no longer affects the silicon isotopic abundance ratios significantly, and, thus, the results of our nova hydrodynamic simulation for the nucleosynthesis in the Si-Ca mass region are more reliable than before. }},
adsurl = {http://adsabs.harvard.edu/abs/2013PhRvC..87f5801S},
archiveprefix = {arXiv},
doi = {10.1103/PhysRevC.87.065801},
eid = {065801},
eprint = {1210.1194},
keywords = {Explosive burning in accreting binary systems, Transfer reactions, Angular distribution and correlation measurements, gamma transitions and level energies},
primaryclass = {nucl-ex}
}
@article{2013PhRvC..87c4303Y,
title = {{{$alpha$}-resonance structure in $^{11}$C studied via resonant scattering of $^{7}$Be+{$alpha$} and with the $^{7}$Be({$alpha$},p) reaction}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Wakabayashi}, Y. and {Kubono}, S. and {Hashimoto}, T. and {Hayakawa}, S. and {Kawabata}, T. and {Iwasa}, N. and {Teranishi}, T. and {Kwon}, Y.~K. and {Binh}, D.~N. and {Khiem}, L.~H. and {Duy}, N.~N.},
journal = {prc},
year = {2013},
month = mar,
number = {3},
pages = {034303},
volume = {87},
abstract = {{{bf Background:} The resonance structure in $^{11}$C is of particular interest with regard to the astrophysical $^{7}$Be({$alpha$},{$gamma$}) reaction, relevant at high temperature, and to the {$alpha$}-cluster structure in $^{11}$C.\ {bf Purpose:} The measurement was made to determine the unknown resonance parameters for the high excited states of $^{11}$C. In particular, the {$alpha$}-decay width can be useful information to discuss the {$alpha$}-cluster structure in $^{11}$C. \{bf Methods:} New measurements of $^{7}$Be+{$alpha$} resonant scattering and the $^{7}$Be({$alpha$},p)$^{10}$B reaction in inverse kinematics were performed for center-of-mass energy up to 5.5 MeV, and the resonances at excitation energies of 8.9--12.7 MeV in the compound $^{11}$C nucleus were studied. Inelastic scattering of $^{7}$Be+{$alpha$} and the $^{7}$Be({$alpha$},p$_{1}$)$^{10}$B$^{*}$ reaction were also studied with a simultaneous {$gamma$}-ray measurement. The measurements were performed at the low-energy radioactive ion beam facility CRIB (CNS Radioactive Ion Beam separator) of the Center for Nuclear Study, the University of Tokyo.\ {bf Results}: We obtained excitation functions of $^{7}$Be({$alpha$},{$alpha$}$_{0}$)$^{7}$Be (elastic scattering), $^{7}$Be({$alpha$},{$alpha$}$_{1}$)$^{7}$Be$^{*}$ (inelastic scattering), $^{7}$Be({$alpha$},p$_{0}$)$^{10}$B, and $^{7}$Be({$alpha$},p$_{1}$)$^{10}$B$^{*}$. Many resonances including a new one were observed and their parameters were determined by using an R-matrix analysis.\ {bf Conclusions:} The resonances we observed possibly enhance the $^{7}$Be({$alpha$},{$gamma$}) reaction rate but with a smaller magnitude than the lower-lying resonances. A new negative-parity cluster band, similar to the one previously suggested in the mirror nucleus $^{11}$B, is proposed. }},
adsurl = {http://adsabs.harvard.edu/abs/2013PhRvC..87c4303Y},
archiveprefix = {arXiv},
doi = {10.1103/PhysRevC.87.034303},
eid = {034303},
eprint = {1212.5991},
keywords = {$^{3}$H-, $^{3}$He-, and $^{4}$He-induced reactions, Resonance reactions, Cluster models, 6{lt}=A{lt}=19},
primaryclass = {nucl-ex}
}
@article{2014PhRvC..90b5803H,
title = {{Examination of the role of the $^{14}$O({$alpha$},p)$^{17}$F reaction rate in type-I x-ray bursts}},
author = {{Hu}, J. and {He}, J.~J. and {Parikh}, A. and {Xu}, S.~W. and
{Yamaguchi}, H. and {Kahl}, D. and {Ma}, P. and {Su}, J. and
{Wang}, H.~W. and {Nakao}, T. and {Wakabayashi}, Y. and {Teranishi}, T. and
{Hahn}, K.~I. and {Moon}, J.~Y. and {Jung}, H.~S. and {Hashimoto}, T. and
{Chen}, A.~A. and {Irvine}, D. and {Lee}, C.~S. and {Kubono}, S.},
journal = {prc},
year = {2014},
month = aug,
number = {2},
pages = {025803},
volume = {90},
abstract = {{The O14({$alpha$}$_{,p)F17 reaction is one of the key reactions involved
in the breakout from the hot-CNO cycle to the rp-process in type-I x-ray
bursts (XRBs). The resonant properties in the compound nucleus Ne18 have
been investigated through resonant elastic scattering of F17+p. The
radioactive F17 beam was separated by the Center for Nuclear Study
radioactive ion beam separator (CRIB) and bombarded a thick H2}$ gas
target at 3.6 MeV/nucleon. The recoiling light particles were measured
by three {$Delta$}$_{E-E silicon telescopes at laboratory angles of
thetalab}${ap}3$^{o}$,10$^{o}$, and
18$^{o}$. Five resonances at E$_{x}$=6.15, 6.28, 6.35,
6.85, and 7.05 MeV were observed in the excitation functions, and their
spin-parities have been determined based on an R-matrix analysis. In
particular, J$^{pi}$=1$^{-}$ was firmly assigned to the
6.15-MeV state which dominates the thermonuclear O14({$alpha$} ,p)F17 rate
below 2 GK. As well, a possible new excited state in Ne18 was observed
at E$_{x}$=6.85{plusmn}0.11 MeV with tentative J =0 assignment.
This state could be the analog state of the 6.880 MeV (0$^{-}$)
level in the mirror nucleus O18, or a bandhead state (0$^{+}$) of
the six-particle four-hole (6p-4h) band. A new thermonuclear O14({$alpha$}
,p)F17 rate has been determined, and the astrophysical impact of
multiple recent rates has been examined using an XRB model. Contrary to
previous expectations, we find only a modest impact on predicted nuclear
energy generation rates from using reaction rates differing by up to
several orders of magnitude.
}},
adsurl = {http://adsabs.harvard.edu/abs/2014PhRvC..90b5803H},
archiveprefix = {arXiv},
doi = {10.1103/PhysRevC.90.025803},
eid = {025803},
eprint = {1407.4246},
keywords = {Elastic proton scattering, Nuclear physics aspects of novae supernovae and other explosive environments, 6<, =A<, =19},
primaryclass = {nucl-ex}
}
@article{2014PhRvC..90a1302I,
title = {{Isobaric analog resonances of $^{31}$Mg and the border of the island of inversion}},
author = {{Imai}, N. and {Mukai}, M. and {Cederk{"a}ll}, J. and {Aghai}, H. and
{Golubev}, P. and {Johansson}, H.~T. and {Kahl}, D. and {Kurcewics}, J. and
{Teranishi}, T. and {Watanabe}, Y.~X.},
journal = {prc},
year = {2014},
month = jul,
number = {1},
pages = {011302},
volume = {90},
abstract = {{The evolution of the nuclear shell structure in the region of the
neutron-rich shell-breaking nucleus Mg32 has been the subject of
considerable interest. We present here the first determination of the
overlap of the ground and two first excited states in Mg31 with a
neutron coupled to the ground state in Mg30 based on studies of its
isobaric analog resonances in Al31. The excitation function for proton
resonant elastic scattering on Mg30 was measured close to
0$^{o}$ in the laboratory frame by bombarding a thick
polyethylene target with a Mg30 beam at an energy of 2.92 MeV/nucleon at
the REX-ISOLDE facility at CERN. Three resonances were successfully
resolved, and angular momenta and total and proton resonance widths were
determined by using R-matrix analysis. The deduced spectroscopic factor
for the ground state in Mg31 is consistent with the shell-model
calculation, whereas those for the first and second excited states could
not be reproduced. These results show that a drastic change in structure
occurs between Mg30 and Mg31 and that the onset of structural change in
this region therefore occurs between these two isotopes.
}},
adsurl = {http://adsabs.harvard.edu/abs/2014PhRvC..90a1302I},
doi = {10.1103/PhysRevC.90.011302},
eid = {011302},
keywords = {Multipole matrix elements, Lifetimes, 20<, =A<, =38, X- and gamma-ray spectroscopy}
}
@article{2014PhRvC..90c5805J,
title = {{Elastic scattering of $^{25}$Al+p to explore the resonance structure in $^{26}$Si}},
author = {{Jung}, H.~S. and {Lee}, C.~S. and {Kwon}, Y.~K. and {Moon}, J.~Y. and
{Lee}, J.~H. and {Yun}, C.~C. and {Kim}, M.~J. and {Hashimoto}, T. and
{Yamaguchi}, H. and {Kahl}, D. and {Kubono}, S. and {Wakabayashi}, Y. and
{Togano}, Y. and {Choi}, S. and {Kim}, Y.~H. and {Kim}, Y.~K. and
{Park}, J.~S. and {Kim}, E.~J. and {Moon}, C.-B. and {Teranishi}, T. and
{Iwasa}, N. and {Yamada}, T. and {Kato}, S. and {Cherubini}, S. and
{Hayakawa}, S. and {Rapisarda}, G.~G.},
journal = {prc},
year = {2014},
month = sep,
number = {3},
pages = {035805},
volume = {90},
abstract = {{Background: The properties of resonances in Si26 are important to better
constrain the Al25(p,{$gamma$})Si26 reaction rate relevant to the
synthesis of galactic Al26$^{gs}$ and energy generation in
explosive stellar environment at higher temperature.

Purpose: Al25+p elastic scattering was measured to further constrain and
investigate disagreements in resonance parameters for the high-lying
excited states of Si26 with high statistics and without background
contamination within the target.

Methods: The experiment was performed by bombarding a thick
H$_{2}$ target with an Al25 radioactive ion beam. The resonances
at excitation energies of 6.6-8.3 MeV in the Si26 compound nucleus were
studied at the low-energy radioactive-ion beam facility CRIB (Center for
Nuclear Study Radioactive Ion Beam separator) at the University of
Tokyo.

Results: Six resonant states were observed and their resonance
parameters were extracted by an R-matrix analysis. Our resonance
parameters for two levels are in good agreement with the results of
previous studies, while for four others, excitation energy, proton
partial width, and spin-parity assignment disagree with the results of
recent study via elastic scattering of Al25+p.

Conclusion: The parameters of resonant states in Si26 determined in the
present work for the Al25(p,{$gamma$})Si26 reaction rate are consistent
with that of the previous result, solving spin-parity assignment
discrepancies between experiments, relevant at higher temperatures.
}},
adsurl = {http://adsabs.harvard.edu/abs/2014PhRvC..90c5805J},
doi = {10.1103/PhysRevC.90.035805},
eid = {035805},
keywords = {Resonance reactions, Elastic proton scattering, Nucleosynthesis in novae supernovae and other explosive environments, 20<, =A<, =38}
}
@article{2014EPJA...50..136K,
title = {{Excited states above the proton threshold in $^{26}$Si}},
author = {{Komatsubara}, T. and {Kubono}, S. and {Hayakawa}, T. and {Shizuma}, T. and {Ozawa}, A. and {Ito}, Y. and {Ishibashi}, Y. and {Moriguchi}, T. and {Yamaguchi}, H. and {Kahl}, D. and {Hayakawa}, S. and {Nguyen Binh}, D. and {Chen}, A.~A. and {Chen}, J. and {Setoodehnia}, K. and {Kajino}, T.},
journal = {European Physical Journal A},
year = {2014},
month = sep,
pages = {136},
volume = {50},
abstract = {The level scheme above the proton threshold in 26Si is crucial for evaluating the 25Al( p, γ)26Si stellar reaction, which is important for understanding the astrophysical origin of the long-lived cosmic radioactivity 26Al( T 1/2 = 7.17 × 105 y) in the Galaxy. The excited states in 26Si have been studied using an in-beam γ-ray spectroscopy technique with the 24Mg(3He, nγ)26Si reaction. γ-rays with energies up to 4.6 MeV emitted from excited states in 26Si have been measured using large volume HPGe detectors. The spin-parity of one of the most important states reported recently at 5890.0keV has been assigned as 0+ by γ- γ angular correlation measurements in this work.},
adsurl = {http://adsabs.harvard.edu/abs/2014EPJA...50..136K},
doi = {10.1140/epja/i2014-14136-4}
}
@article{2014NDS...120...88M,
title = {{In-beam {$gamma$}-ray Spectroscopy of $^{30}$P via the $^{28}$Si($^{3}$He,p{$gamma$})$^{30}$P Reaction}},
author = {{Mcneice}, E. and {Setoodehnia}, K. and {Singh}, B. and {Abe}, Y. and {Binh}, D.~N. and {Chen}, A.~A. and {Chen}, J. and {Cherubini}, S. and {Fukuoka}, S. and {Hashimoto}, T. and {Hayakawa}, T. and {Ishibashi}, Y. and {Ito}, Y. and {Kahl}, D. and {Komatsubara}, T. and {Kubono}, S. and {Moriguchi}, T. and {Nagae}, D. and {Nishikiori}, R. and {Niwa}, T. and {Ozawa}, A. and {Shizuma}, T. and {Suzuki}, H. and {Yamaguchi}, H. and {Yuasa}, T.},
journal = {Nuclear Data Sheets},
year = {2014},
month = jun,
pages = {88-90},
volume = {120},
abstract = {The level structure of 30P up to 8.25 MeV was investigated via in-beam γ-ray spectroscopy using the 28Si(3He,pγ)30P reaction at 9 MeV at the University of Tsukuba Tandem Accelerator Complex in Japan. An energy level scheme was deduced from γ-γ coincidence measurements. 47 new transitions have been observed from the previously known states (mostly resonances), thereby reducing the uncertainties in the excitation energies of 17 states from 3 to 10 keV to values of < 1 keV. Furthermore, spin assignments based on measurements of γ-ray angular distributions and γ-γ directional correlation of oriented nuclei (DCO ratios) were made for several observed levels of 30P.},
adsurl = {http://adsabs.harvard.edu/abs/2014NDS...120...88M},
doi = {10.1016/j.nds.2014.07.014}
}
@article{2014PhRvC..89a5804Z,
title = {{Investigation of the thermonuclear $^{18}$Ne({$alpha$},p)$^{21}$Na reaction rate via resonant elastic scattering of $^{21}$Na + p}},
author = {{Zhang}, L.~Y. and {He}, J.~J. and {Parikh}, A. and {Xu}, S.~W. and
{Yamaguchi}, H. and {Kahl}, D. and {Kubono}, S. and {Mohr}, P. and
{Hu}, J. and {Ma}, P. and {Chen}, S.~Z. and {Wakabayashi}, Y. and
{Wang}, H.~W. and {Tian}, W.~D. and {Chen}, R.~F. and {Guo}, B. and
{Hashimoto}, T. and {Togano}, Y. and {Hayakawa}, S. and {Teranishi}, T. and
{Iwasa}, N. and {Yamada}, T. and {Komatsubara}, T. and {Zhang}, Y.~H. and
{Zhou}, X.~H.},
journal = {prc},
year = {2014},
month = jan,
number = {1},
pages = {015804},
volume = {89},
abstract = {{The $^{18}$Ne({$alpha$},p)$^{21}$Na reaction is thought to be one of the key breakout reactions from the hot CNO cycles to the rp process in type I x-ray bursts. In this work, the resonant properties of
the compound nucleus $^{22}$Mg have been investigated by measuring the resonant elastic scattering of $^{21}$Na + p. An 89-MeV $^{21}$Na radioactive beam delivered from the CNS Radioactive Ion Beam Separator bombarded an 8.8 mg/cm$^{2}$ thick polyethylene (CH$_{2}$)n target. The $^{21}$Na beam intensity was about 2{times}10$^{5}$ pps, with a purity of about 70% on target. The recoiled protons were measured at the center-of-mass scattering angles of {theta}$_{c.m.}${approx}175.2$^{circ}$, 152.2$^{circ}$, and 150.5$^{circ}$ by three sets of {$Delta$}E-E telescopes, respectively. The excitation function was obtained with the thick-target method over energies E$_{x}$($^{22}$Mg)=5.5-9.2 MeV. In total, 23 states above the proton-threshold in $^{22}$Mg were observed, and their resonant parameters were determined via an R-matrix analysis of the excitation functions. We have made several new J$^{pi}$ assignments and confirmed some tentative assignments made in previous work. The thermonuclear $^{18}$Ne({$alpha$},p)$^{21}$Na rate has been recalculated based on our recommended spin-parity assignments. The astrophysical impact of our new rate has been investigated through one-zone postprocessing x-ray burst calculations. We find that the $^{18}$Ne({$alpha$},p)$^{21}$Na rate significantly affects the peak nuclear energy generation rate, reaction fluxes, and onset temperature of this breakout reaction in these astrophysical phenomena.}},
adsurl = {http://adsabs.harvard.edu/abs/2014PhRvC..89a5804Z},
archiveprefix = {arXiv},
doi = {10.1103/PhysRevC.89.015804},
eid = {015804},
eprint = {1403.4668},
keywords = {Reactions induced by unstable nuclei, Decay by proton emission, Nuclear physics aspects of novae supernovae and other explosive environments, 20<, =A<, =38},
primaryclass = {astro-ph.SR}
}
@article{2015JKPS...66..459L,
title = {{Development and performance test of the analysis software for the CRIB active target}},
author = {{Lee}, P. and {Lee}, C.~S. and {Moon}, J.~Y. and {Chae}, K.~Y. and {Cha}, S.~M. and {Yamaguchi}, H. and {Nakao}, T. and {Kahl}, D.~M. and {Kubono}, S. and {Cherubini}, S. and {Hayakawa}, S. and {Signorini}, C. },
journal = {Journal of Korean Physical Society},
year = {2015},
month = feb,
pages = {459-464},
volume = {66},
abstract = {Software for genuinely event-by-event analysis and event reconstruction of data obtained by using an active target has been developed in the graphical user interface under the CERN ROOT framework. The primary motivation for developing the software was to provide physicists who perform experiments using an active target a more user-friendly environment for the purpose of investigating the performance of detection systems and obtaining ideas about physics from a large amount of experimental data. To test the performance of the software, we analyzed experimental data from a 16N radioactive ion beam experiment for α-decay measurements. As a result of the analysis, we observed the Bragg curve and measured the range of the 16N RI beam in the detector. Data were calibrated against the calculation after comparing the Bragg curve to the one obtained from an energy loss calculation in P-10 gas. We present a detailed description of the analysis software and its test results.},
adsurl = {http://adsabs.harvard.edu/abs/2015JKPS...66..459L},
doi = {10.3938/jkps.66.459},
keywords = {GEM-MSTPC, CRIB, MSTPC, Active target}
}
Edited conference proceedings
@article{2008nuco.confE.153C,
title = {{Study of astrophysically important states in $^{26}$Si with the p($^{25}$Al,p)$^{25}$Al elastic scattering}},
author = {{Chen}, J. and {Chen}, A.~A. and {Amadio}, G. and {Bazin}, D. and {Becerril Reyes}, A.~D. and {Amthor}, A.~M. and {Cherubini}, S. and {Galaviz Redondo}, D. and {Gade}, A. and {Glasmacher}, T. and {Fujikawa}, H. and {Iwasa}, N. and {He}, J.~J. and {Hayakawa}, S. and {Kahl}, D. and {Khiem}, L.~H. and {Kubono}, S. and {Kurihara}, Y. and {Kwon}, Y.~K. and {Lorusso}, G. and {Matos}, M. and {Moon}, J.~Y. and {Niikura}, M. and {Nishimura}, S. and {Odahara}, A. and {Ouellet}, C.~V. and {Pearson}, J. and {Pereira}, J. and {Pizzone}, R.~G. and {Sidoti}, A. and {Schatz}, H. and {Smith}, K. and {Teranishi}, T. and {Togano}, Y. and {Wales}, B. and {Wakabayashi}, Y. and {Yamaguchi}, Y. and {Zegers}, R. },
journal = {Proceedings of Science},
year = {2008},
pages = {153:1-5},
volume = {NIC X},
abstract = {The radioisotope $^{26}$Al is an important probe of the interstellar medium of our galaxy, but its production is now still not well determined partially due to the lack of knowledge of the important states in $^{26}$Si, which dominate the large uncertainty in the $^{25}$Al(p,$gamma$)$^{26}$Si reaction rate at nova temperatures. We give an update on two experiments that were performed to study these states. One is a measurement of the $^{27}$Si(p,d)$^{26}$Si$^{*}$ reaction at the NSCL, and the other one is a measurement of the $^{25}$Al+p elastic scattering with the CRIB facility at RIKEN.},
adsurl = {http://adsabs.harvard.edu/abs/2008nuco.confE.153C},
url = {http://pos.sissa.it/archive/conferences/053/153/NIC%20X_153.pdf}
}
@article{2008nuco.confE.171K,
title = {{Astrophysical (alpha,p) cross section technique and $^{30}$S RIB Development}},
author = {{Kahl}, D. and {Chen}, A.~A. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Kim}, A. and {Kubono}, S. and {Kurihara}, Y. and {Lee}, N.~H. and {Michimasa}, S. and {Nishimura}, S. and {Ouellet}, C.~V. and {Setoodehnia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {Proceedings of Science},
year = {2008},
pages = {171:1-5},
volume = {NIC X},
abstract = {The present work reports the results of $^{30}$S radioactive beam development for a future experiment directly measuring data to extrapolate the $^{30}$S($alpha$,p) stellar reaction rate in Type I X-ray bursts, a phenomena where nuclear explosions occur repeatedly on the surface of accreting neutron stars. We produce the radioactive ion $^{30}$S via the $^{3}$He($^{28}$Si,$^{30}$S)n reaction, by bombarding a cryogenically cooled target of $^{3}$He at 400 Torr and 80 K with $^{28}$Si beams of 6.9 and 7.54 MeV/u. In order to perform a successful future experiment which allows us to calculate the stellar $^{30}$S($alpha$,p) reaction rate, Hauser-Feshbach calculations indicate we require a $^{30}$S beam of $sim 10^{5}$ particles per second (pps) at $sim$ 32 MeV. Based on our recent beam development experiments in 2006 and 2008, it is believed that such a beam may be fabricated in 2009 according to the results presented. We plan to measure the $^{4}$He($^{30}$S,p) cross-section at astrophysical energies in 2009, and some brief remarks on the planned ($alpha$,p) technique are also elucidated.},
adsurl = {http://adsabs.harvard.edu/abs/2008nuco.confE.171K},
archiveprefix = {arXiv},
booktitle = {Nuclei in the Cosmos (NIC X)},
eprint = {0904.2067},
url = {http://pos.sissa.it/archive/conferences/053/171/NIC%20X_171.pdf}
}
@article{2008ASPC..393..219K,
title = {{Radioactive $^{30}$S Beam to Study X-Ray Bursts}},
author = {{Kahl}, D. and {Chen}, A.~A. and {Chen}, J. and {Hayakawa}, S. and {Kim}, A. and {Kubono}, S. and {Michimasa}, S. and {Setoodehnia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {Astronomical Society of the Pacific Conference Series},
year = {2008},
month = aug,
pages = {219-222},
volume = {393},
abstract = {The understanding of energy generation in Type I X-ray bursts will be enhanced by a direct measurement of the nuclear reaction cross section $^{30}$S($alpha$,p)$^{33}$Cl. Models of this explosive stellar nucleosynthesis are constrained by the observations of bursts with multiple peaks in their bolometric luminosity. A recent model by Fisker, Thielemann, & Wiescher (2004) gives a theoretical basis for a nuclear waiting point at $^{30}$S in order to explain these observations. In order to experimentally test the predictions of this model, the authors undertook two days of $^{30}$S radioactive ion beam (RIB) development in December 2006 in preparation for a 2008 experiment directly measuring the $alpha$($^{30}$S,p) cross section.},
adsurl = {http://adsabs.harvard.edu/abs/2008ASPC..393..219K},
booktitle = {New Horizons in Astronomy},
editor = {{A.~Frebel, J.~R.~Maund, J.~Shen, & M.~H.~Siegel}},
url = {http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ASPC..393..219K&link_type=ARTICLE&db_key=AST}
}
@article{2008nuco.confE.161S,
title = {{Study of Astrophysically Important Resonant States in $^{30}$S by the $^{32}$S(p,t)$^{30}$S Reaction}},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Clark}, J.~A. and {Deibel}, C. and {Kahl}, D. and {Parker}, P.~D. and {Wrede}, C.},
journal = {Proceedings of Science},
year = {2008},
pages = {161:1-5},
volume = {NIC X},
abstract = {A small fraction ($lt$ 1%) of presolar SiC grains is suggested to have been formed in the ejecta of classical novae. The $^{29}$P(p,$gamma$)$^{30}$S reaction plays an important role in understanding the Si isotopic abundances in such grains, which in turn provide us with information on the nature of the probable white dwarf progenitor’s core, as well as the peak temperatures achieved during nova outbursts. This rate is determined by two low-lying 3$^{+}$ and 2$^{+}$ resonances above the proton threshold in $^{30}$S at 4399 keV. Despite several experimental studies in the past however, the 3$^{+}$ resonance has only been recently observed in one experiment and no definitive evidence for the 2$^{+}$ state has been published yet. We have studied the $^{30}$S nuclear structure via the $^{32}$S(p,t)$^{30}$S reaction at 5 laboratory angles between 9$^{circ}$ to 62$^{circ}$. We have observed between 8 to 14 states above the proton threshold including two levels at 4695.5 ± 3.5 keV and 4814.9 ± 3.5 keV that are candidates for the 3$^{+}$ and previously ``missing'' 2$^{+}$ state, respectively.},
adsurl = {http://adsabs.harvard.edu/abs/2008nuco.confE.161S},
booktitle = {Nuclei in the Cosmos (NIC X)},
url = {http://pos.sissa.it/archive/conferences/053/161/NIC%20X_161.pdf}
}
@article{2008AIPC..972..261T,
title = {{The S$_{E1}$ factor of the $^{12}$C({$alpha$},{$gamma$})$^{16}$O Reaction and the $^{16}$N {$beta$}-delayed {$alpha$} Decay}},
author = {{Tang}, X. and {Rehm}, K.~E. and {Ahmad}, I. and {Brune}, C.~R. and {Champagne}, A. and {Greene}, J.~P. and {Hecht}, A.~A. and {Henderson}, D. and {Janssens}, R.~V.~F. and {Jiang}, C.~L. and {Jisonna}, L. and {Kahl}, D. and {Moore}, E.~F. and {Notani}, M. and {Pardo}, R.~C. and {Patel}, N. and {Paul}, M. and {Savard}, G. and {Schiffer}, J.~P. and {Segel}, R.~E. and {Sinha}, S. and {Shumard}, B. and {Wuosmaa}, A.~H. },
journal = {American Institute of Physics Conference Series},
year = {2008},
month = jan,
pages = {261-269},
volume = {972},
abstract = {The $^{12}$C($alpha$,$gamma$)$^{16}$O reaction is of great importance for the understanding the nuclear synthesis and explosion mechanism of the supernova. The cross section at the relevant stellar burning energies, around 300 keV, is dominated by the sub-threshold resonances. The $^{16}$N $beta$-delayed $alpha$ decay data provide the most sensitive constrain on this sub-threshold resonance. Using twin-ionization chambers, we have measured the $alpha$ particles and $^{12}$C recoil nuclei in coincidence. The spectrum has been fitted together with the published $^{12}$C($alpha$,$gamma$)$^{16}$O data and the elastic scattering phase shift data using R-matrix. The S$_{E1}$ factor at 300 keV has been determined as 73±21 keVb.},
adsurl = {http://adsabs.harvard.edu/abs/2008AIPC..972..261T},
booktitle = {Exotic Nuclei and Nuclear/Particle Astrophysics (II)},
doi = {10.1063/1.2870303},
editor = {{L.~Trache & S.~Stoica}},
keywords = {nuclear explosions, nuclear reactions and scattering, nuclear resonances, supernovae, alpha-decay}
}
@article{2009AIPC.1120..189Y,
title = {{Nuclear Astrophysical studies using low-energy RI beams at CRIB}},
author = {{Yamaguchi}, H. and {Wakabayashi}, Y. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kurihara}, Y. and {Kubono}, S. and {Teranishi}, T. and {He}, J.~J. and {Kwon}, Y.~K. and {Nishimura}, S. and {Togano}, Y. and {Iwasa}, N. and {Niikura}, M. and {Khiem}, L.~H.},
journal = {American Institute of Physics Conference Series},
year = {2009},
month = may,
pages = {189-193},
volume = {1120},
abstract = {CRIB (CNS Radioactive Ion Beam separator) is a low-energy RI beam separator at the Center for Nuclear Study (CNS) of the University of Tokyo, used for various studies covering nuclear-astrophysical topics. An application of the RI beam at CRIB for the astrophysical studies is a new measurement of the proton resonance scattering on $^{7}$Be. The measurement was performed up to the excitation energy of 6.8 MeV, ans the excitation function above 3.5 MeV was successfully measured for the first time, providing important information about the reaction rate of $^{7}$Be(p,$gamma$)$^{8}$B, which is the key reaction in the solar $^{8}$B neutrino production. A preliminary result of the $^{7}$Be+p experiment is presented.},
adsurl = {http://adsabs.harvard.edu/abs/2009AIPC.1120..189Y},
doi = {10.1063/1.3141645},
keywords = {Solar neutrinos, Low and intermediate energy heavy-ion reactions, Cyclotrons, Gas-filled counters: ionization chambers, proportional, and avalanche counters, Astronomical and space-research instrumentation}
}
@article{2010AIPC.1269..387B,
title = {{Direct Measurement of $^{21}$Na+{$alpha$} Stellar Reaction}},
author = {{Binh}, D.~N. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Hashimoto}, T. and {Kahl}, D. and {Teranishi}, T. and {Iwasa}, N. and {Kume}, N. and {Kato}, S. and {Khiem}, L.~H. and {Tho}, N.~T. and {Wakabayashi}, Y.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = aug,
pages = {387-389},
volume = {1269},
abstract = {The measurement of the resonant alpha scattering and the $^{21}$Na($alpha$, p) reaction were performed for the first time in inverse kinematics with the thick target method using a $^{21}$Na radioisotope (RI) beam. This paper reports the current result of alpha scattering measurement and its astrophysics implication.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1269..387B},
booktitle = {American Institute of Physics Conference Series},
doi = {10.1063/1.3485175},
editor = {{I.~Tanihara, H.~J.~Ong, A.~Tamii, T.~Kishimoto, T.~Kajino, S.~Kubono, & T.~Shima}},
keywords = {radioactive ion beams, nucleosynthesis, beta-decay, gamma-rays, Sources of radioactive nuclei, Cosmic ray nucleosynthesis, Relation with nuclear matrix elements and nuclear structure, gamma-ray}
}
@article{2010NuPhA.834..667C,
title = {{Study of astrophysically important states in $^{26}$Si with the p($^{27}$Si,$^{26}$Si$^{*}$)d reaction and the p($^{25}$Al,p)$^{25}$Al elastic scattering}},
author = {{Chen}, J. and {Chen}, A.~A. and {Schatz}, H. and {Kubono}, S. and {Reyes}, A.~B. and {Smith}, A. and {Wales}, B. and {Ouellet}, C. and {Kahl}, D. and {Redondo}, D.~G. and {Lorusso}, G. and {Lenestour}, J. and {Conca}, J.~P. and {Smith}, K. and {Amthor}, M. and {Matos}, M. and {Yamaguchi}, H. and {Iwasa}, N. and {Hayakawa}, S. and {Michimasa}, S. and {Teranishi}, T. and {Kurihawa}, Y. and {Wakabayashi}, Y.},
journal = {Nuclear Physics A},
year = {2010},
month = mar,
pages = {667-669},
volume = {834},
abstract = {The astrophysically important states in $^{26}$Si have been studied with different reactions because of their dominant contribution to the $^{25}$Al(p,$gamma$)$^{26}$Si reaction rate at nova temperatures. We performed two different experiments to study the states of interest in $^{26}$Si, with the aim of reducing the main uncertainty in the current $^{25}$Al(p,$gamma$)$^{26}$Si rate by determining the level parameters of the dominant states more accurately. One is the p($^{27}$Si,$^{26}$Si$^{*}$)d experiment at NSCL, in which we measured the gamma-ray decays from the excited states in $^{26}$Si. The other one is the $^{25}$Al+p elastic scattering experiment with CRIB at RIKEN.},
adsurl = {http://adsabs.harvard.edu/abs/2010NuPhA.834..667C},
doi = {10.1016/j.nuclphysa.2010.01.119}
}
@article{2010AIPC.1269..104H,
title = {{Direct measurement of the $^{11}$C({$alpha$}, p)$^{14}$N stellar reaction at CRIB}},
author = {{Hayakawa}, S. and {Kubono}, S. and {Hashimoto}, T. and {Yamaguchi}, H. and {Binh}, D.~N. and {Kahl}, D.~M. and {Wakabayashi}, Y. and {Iwasa}, N. and {Kume}, N. and {Miura}, I. and {Teranishi}, T. and {He}, J.~J. and {Kwon}, Y.~K. and {Komatsubara}, T. and {Kato}, S. and {Wanajo}, S. },
journal = {American Institute of Physics Conference Series},
year = {2010},
month = aug,
pages = {104-109},
volume = {1269},
abstract = {The first direct measurement of the $^{11}$C($alpha$, p)$^{14}$N reaction cross section of astrophysical interest has been performed for the center-of-mass energies from 1 to 4.5 MeV with the CRIB (Center for Nuclear Study Radioactive Ion Beam separator). We successfully distinguished the transition to the ground state of $^{14}$N and that to the second excited state with a comparable yield. The resonant shapes in the preliminary excitation function for the ground state transition have been confirmed to be consistent with the ones from the time-reversal reaction data of previous experiments.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1269..104H},
doi = {10.1063/1.3485120},
editor = {{I.~Tanihara, H.~J.~Ong, A.~Tamii, T.~Kishimoto, T.~Kajino, S.~Kubono, & T.~Shima}},
keywords = {radioactive ion beams, supernovae, cyclotrons, telescopes, Sources of radioactive nuclei, Nuclear physics aspects of novae, supernovae, and other explosive environments, Cyclotrons, Astronomical and space-research instrumentation},
series = {American Institute of Physics Conference Series}
}
@article{2010nuco.confE..62H,
title = {{Direct determination of the $^{11}$C($alpha$,,p)$^{14}$N reaction rate with CRIB: an alternative synthesis path to the CNO elements}},
author = {{Hayakawa}, S. and {Kubono}, S. and {Hashimoto}, T. and {Yamaguchi}, H. and {Dam}, B. and {Kahl}, D. and {Wakabayashi}, Y. and {Iwasa}, N. and {Kume}, N. and {Miura}, I. and {Teranishi}, T. and {He}, J.~J. and {Kwon}, Y.~K. and {Komatsubara}, T. and {Kato}, S. and {Wanajo}, S. },
journal = {Proceedings of Science},
year = {2010},
pages = {62:1-5},
volume = {NIC-XI},
abstract = {We reported new results on the first direct measurement of the $^{11}$C($alpha$,,p)$^{14}$N reaction, which is considered to be part of an alternative pathway responsible for the nucleosynthesis from the pp-chain region to the CNO cycle region in high-temperature hydrogen burning processes. We successfully measured the excitation functions at stellar energies both for ($alpha$,,p$_{0}$), ($alpha$,,p$_{1}$) and ($alpha$,,p$_{2}$) separately for the first time.},
adsurl = {http://adsabs.harvard.edu/abs/2010nuco.confE..62H},
url = {http://pos.sissa.it/archive/conferences/100/062/NIC%20XI_062.pdf}
}
@article{2010AIPC.1269..424K,
title = {{$^{30}$S({$alpha$}, p) in X-Ray Bursts at CRIB}},
author = {{Kahl}, D. and {Chen}, A.~A. and {Kubono}, S. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Kaji}, D. and {Kim}, A. and {Kurihara}, Y. and {Lee}, N.~H. and {Nishimura}, S. and {Ohshiro}, Y. and {Setoodeh Nia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = aug,
pages = {424-426},
volume = {1269},
abstract = {Over the past three years, we have worked on developing a well-characterized $^{30}$S radioactive beam to be used in a future experiment aiming to directly measure the $^{30}$S($alpha$, p) stellar reaction rate within the Gamow window of Type I X-ray bursts.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1269..424K},
archiveprefix = {arXiv},
doi = {10.1063/1.3485188},
editor = {{I.~Tanihara, H.~J.~Ong, A.~Tamii, T.~Kishimoto, T.~Kajino, S.~Kubono, & T.~Shima}},
eprint = {1010.4958},
keywords = {X-ray sources (astronomical), radioactive ion beams, magnetic moments, X-ray sources; X-ray bursts, Sources of radioactive nuclei, Electric and magnetic fields},
primaryclass = {nucl-ex},
series = {American Institute of Physics Conference Series}
}
@article{2010AIPC.1213..208K,
title = {{$^{30}$S Beam Development and X-ray Bursts}},
author = {{Kahl}, D. and {Chen}, A.~A. and {Kubono}, S. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Kaji}, D. and {Kim}, A. and {Kurihara}, Y. and {Lee}, N.~H. and {Ohshiro}, Y. and {Nishimura}, S. and {Setoodeh Nia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = mar,
pages = {208-214},
volume = {1213},
abstract = {Over the past three years, we have worked on developing a well-characterized $^{30}$S radioactive beam to be used in a future experiment aiming to directly measure to extrapolate the $^{30}$S($alpha$,p) stellar reaction rate within the Gamow window of Type I X-ray bursts. The importance of the $^{30}$S($alpha$,p) reaction to X-ray bursts is discussed. Given the astrophysical motivation, the successful results of and challenges involved in the production of a low-energy $^{30}$S beam are detailed. Finally, an overview of our future plans regarding this on-going project are presented.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1213..208K},
archiveprefix = {arXiv},
doi = {10.1063/1.3362583},
editor = {{C.~Spitaleri, C.~Rolfs, & R.~G.~Pizzone}},
eprint = {1010.4928},
keywords = {X-ray sources (astronomical), radioactive ion beams, heavy ion-nucleus reactions, counters, X-ray sources; X-ray bursts, Sources of radioactive nuclei, Heavy-particle decay, Gas-filled counters: ionization chambers, proportional, and avalanche counters},
primaryclass = {nucl-ex},
series = {American Institute of Physics Conference Series}
}
@article{2010NuPhA.834..647K,
title = {{Nuclear Clusters in Astrophysics}},
author = {{Kubono}, S. and {Binh}, D.~N. and {Hayakawa}, S. and {Hashimoto}, H. and {Kahl}, D. and {Wakabayashi}, Y. and {Yamaguchi}, H. and {Teranishi}, T. and {Iwasa}, N. and {Komatsubara}, T. and {Kato}, S. and {Khiem}, L.~H.},
journal = {Nuclear Physics A},
year = {2010},
month = mar,
pages = {647-650},
volume = {834},
abstract = {The role of nuclear clustering is discussed for nucleosynthesis in stellar evolution with Cluster Nucleosynthesis Diagram (CND) proposed before. Special emphasis is placed on $alpha$-induced stellar reactions together with molecular states for O and C burning.},
adsurl = {http://adsabs.harvard.edu/abs/2010NuPhA.834..647K},
doi = {10.1016/j.nuclphysa.2010.01.113}
}
@article{2010AIPC.1224..475K,
title = {{Nuclear Astrophysics Programs with Low-Energy RI Beams at CRIB}},
author = {{Kubono}, S. and {Binh}, D.~N. and {Hayakawa}, S. and {Hashimoto}, T. and {Kahl}, D.~M. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Teranishi}, T. and {Iwasa}, N. and {Komatsubara}, T. and {Kato}, S. and {Khiem}, L.~H.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = apr,
pages = {475-481},
volume = {1224},
abstract = {Nuclear astrophysics activities with CNS RI beam separator (CRIB) are reported together with the present status of the CRIB facility which is supported by the AVF upgrade project for the total development of the low-energy RIB facility. The activities include direct and indirect measurements of stellar reactions especially relevant to explosive burning processes such as nova and supernovae. Some recent results are discussed together with a scope of the facility.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1224..475K},
doi = {10.1063/1.3431454},
editor = {{Y.~E.~Penionzhkevich & S.~M.~Lukyanov}},
keywords = {radioactive ion beams, nucleosynthesis, cyclotrons, heavy ion-nucleus reactions, Reaccelerated radioactive beams, Weak interaction and neutrino induced processes, galactic radioactivity, Cyclotrons, Hard scattering in relativistic heavy ion collisions},
series = {American Institute of Physics Conference Series}
}
@article{2010NuPhA.834..205S,
title = {{Study of astrophysically important resonant states in $^{30}$S using the $^{32}$S(p,t)$^{30}$S reaction}},
author = {{Setoodehnia}, K. and {Chen}, {A.-A.} and {Chen}, J. and {Clark}, {J.-A.} and {Deibel}, C. and {Kahl}, D. and {Lennard}, {W.-N.} and {Parker}, {P.-D.} and {Wrede}, C.},
journal = {Nuclear Physics A},
year = {2010},
month = mar,
pages = {205-207},
volume = {834},
abstract = {The $^{29}$P(p,$gamma$)$^{30}$S reaction plays an important role in understanding the Si isotopic abundances in presolar grains of nova origin, which in turn provide us with information on the nature of the probable white dwarf progenitor's core, as well as the peak temperatures achieved during nova outbursts. This rate at nova temperatures is determined by two low-lying 3$^{+}$ and 2$^{+}$ resonances above the proton threshold at 4399 keV in $^{30}$S. We have studied the $^{30}$S nuclear structure via the $^{32}$S(p,t)$^{30}$S reaction at 5 laboratory angles between 9$^{circ}$ to 62$^{circ}$. We have observed 14 states including two levels at 4692.7 ± 4.5 keV and 4813.8 ± 3.4 keV that are candidates for the 3$^{+}$ and the previously “missing” 2$^{+}$ state, respectively.},
adsurl = {http://adsabs.harvard.edu/abs/2010NuPhA.834..205S},
doi = {10.1016/j.nuclphysa.2009.12.041}
}
@article{2010EPJWC...214005S,
title = {{Study of astrophysically important resonant states in $^{30}$S using the $^{32}$S(p,t)$^{30}$S reaction}},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Chen}, J. and {Clark}, J.~A. and {Deibel}, C. and {Kahl}, D. and {Lennard}, W.~N. and {Parker}, P.~D. and {Wrede}, C.},
journal = {European Physical Journal Web of Conferences},
year = {2010},
month = mar,
pages = {14005:1-3},
volume = {2},
abstract = {A small fraction ($lt$ 1%) of presolar SiC grains is suggested to have been formed in the ejecta of classical novae. The $^{29}$P(p,$gamma$)$^{30}$S reaction plays an important role in understanding the Si isotopic abundances in such grains, which in turn provide us with information on the nature of the probable white dwarf progenitor's core, as well as the peak temperatures achieved during nova outbursts, and thus the nova nucleosynthetic path. The $^{29}$P(p,$gamma$)$^{30}$S reaction rate at nova temperatures is determined by two low-lying 3$^{+}$ and 2$^{+}$ resonances above the proton threshold at 4399 keV in $^{30}$S. Despite several experimental studies in the past, however, only one of these two states has only been observed very recently. We have studied the $^{30}$S nuclear structure via the $^{32}$S(p,t)$^{30}$S reaction at 5 laboratory angles between 9$^{circ}$ to 62$^{circ}$. We have observed 14 states, eleven of which are above the proton threshold, including two levels at 4692.7 ± 4.5 keV and 4813.8 ± 3.4 keV that are candidates for the 3$^{+}$ and the previously ``missing'' 2$^{+}$ state, respectively.},
adsurl = {http://adsabs.harvard.edu/abs/2010EPJWC...214005S},
doi = {10.1051/epjconf/20100214005}
}
@article{2010JPhCS.202a2042S,
title = {{Study of astrophysically important resonant states in $^{30}$S using the $^{32}$S(p,t)$^{30}$S reaction}},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Chen}, J. and {Clark}, J.~A. and {Deibel}, C. and {Kahl}, D. and {Lennard}, W.~N. and {Parker}, P.~D. and {Wrede}, C.},
journal = {Journal of Physics Conference Series},
year = {2010},
month = jan,
number = {1},
pages = {012042:1-4},
volume = {202},
abstract = {A small fraction ($lt$ 1%) of presolar SiC grains is suggested to have been formed in the ejecta of classical novae. The $^{29}$P(p,$gamma$)$^{30}$S reaction plays an important role in understanding the Si isotopic abundances in such grains, which in turn provide us with information on the nature of the probable white dwarf progenitor's core, as well as the peak temperatures achieved during nova outbursts, and thus the nova nucleosynthetic path. This rate at nova temperatures is determined by two low-lying 3$^{+}$ and 2$^{+}$ resonances above the proton threshold at 4399 keV in $^{30}$S. Despite several experimental studies in the past, however, these two states have only been observed very recently. We have studied the $^{30}$S nuclear structure via the $^{32}$S(p,t)$^{30}$S reaction at 5 laboratory angles between 9$^{circ}$ to 62$^{circ}$. We have observed 14 states, eleven of which are above the proton threshold, including two levels at 4692.7 ± 4.5 keV and 4813.8 ± 3.4 keV that are candidates for the 3$^{+}$ and the previously ``missing'' 2$^{+}$ state, respectively.},
adsurl = {http://adsabs.harvard.edu/abs/2010JPhCS.202a2042S},
doi = {10.1088/1742-6596/202/1/012042}
}
@article{2010AIPC.1213..235S,
title = {{Study of astrophysically important resonant states in $^{30}$S using the $^{32}$S(p,t)$^{30}$S reaction}},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Chen}, J. and {Clark}, J.~A. and {Deibel}, C.~M. and {Kahl}, D. and {Lennard}, W.~N. and {Parker}, P.~D. and {Wrede}, C.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = mar,
pages = {235-238},
volume = {1213},
abstract = {A small fraction of presolar SiC grains is suggested to have been formed in the ejecta of classical novae. The Si isotopic abundances in such grains can be determined from the $^{29}$P(p,$gamma$)$^{30}$S reaction rate at nova temperatures. The Si isotopic abundances provide us with information on the nature of the probable white dwarf progenitor's core, as well as the peak temperatures achieved during nova outbursts, and thus the nova nucleosynthetic path. The $^{29}$P(p,$gamma$)$^{30}$S reaction rate at nova temperatures is determined by two low-lying 3$^{+}$ and 2$^{+}$ resonances above the proton threshold at 4399 keV in $^{30}$S. However, only one of these two states has only been observed very recently. We have studied the $^{30}$S nuclear structure via the $^{32}$S(p,t)$^{30}$S reaction at 5 laboratory angles between 9$^{circ}$ to 62$^{circ}$. We have observed 14 states, eleven of which are above the proton threshold, including two levels at 4692.7±4.5 keV and 4813.8±3.4 keV that are candidates for the 3$^{+}$ and the previously ``missing'' 2$^{+}$ state, respectively.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1213..235S},
doi = {10.1063/1.3362596},
editor = {{C.~Spitaleri, C.~Rolfs, & R.~G.~Pizzone}},
keywords = {nucleosynthesis, stellar evolution, novae, nuclear structure, Cosmic ray nucleosynthesis, Black holes, Novae, dwarf novae, recurrent novae, and other cataclysmic variables, Collective levels},
series = {American Institute of Physics Conference Series}
}
@article{2010nuco.confE.213S,
title = {{Study of Astrophysically Important Excited States of $^{30}$S via the $^{28}$Si($^{3}$He,,n$gamma$)$^{30}$S}},
author = {{Setoodehnia}, K. and {Chen}, A. and {Komatsubara}, T. and {Kubono}, S. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, T. and {Ishibashi}, Y. and {Ito}, Y. and {Kahl}, D. and {Moriguchi}, T. and {Ooishi}, H. and {Ozawa}, A. and {Shizuma}, T. and {Yamaguchi}, H. },
journal = {Proceedings of Science},
year = {2010},
pages = {213:1-5},
volume = {NIC-XI},
abstract = {The $^{29}$P(p,,$gamma$ )$^{30}$S reaction rate strongly affects explosive hydrogen burning in classical novae and type I X-ray bursts, and depends on the structure of proton unbound $^{30}$S states. The rate in the temperature characteristic of nucleosynthesis in novae and X-ray bursts had been previously predicted to be dominated by two low-lying, unobserved, J$pi$= 3$^{+}$ and 2$^{+}$ resonances above the proton threshold in $^{30}$S. Since then, two states have been found at 4699(6) keV and 4814(3) keV, which were tentatively assigned to be the 3$^{+}$ and 2$^{+}$ states, respectively. To confirm the existence of these two levels and their energies, the structure of $^{30}$S was investigated via an in-beam $gamma$-ray spectroscopy experiment using the $^{28}$Si($^{3}$He,,n$gamma$)$^{30}$S reaction at University of Tsukuba Tandem Accelerator Complex in Japan. This work describes the experimental setup and presents the preliminary results.},
adsurl = {http://adsabs.harvard.edu/abs/2010nuco.confE.213S},
url = {http://pos.sissa.it/archive/conferences/100/213/NIC%20XI_213.pdf}
}
@article{2010AIPC.1269..262Y,
title = {{Studies of alpha-induced astrophysical reactions at CRIB}},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = aug,
pages = {262-267},
volume = {1269},
abstract = {CRIB (CNS Radioactive Ion Beam separator ) is a low-energy RI beam separator at the Center for Nuclear Study (CNS) of the University of Tokyo. Using the RI beams at CRIB, many measurements on proton alpha resonance scatterings, ($alpha$,p) reactions, and others were performed in recent years mainly for studying astrophysical reactions and exotic nuclear structure. Among them, the results on the $^{7}$Li+$alpha$ resonance scatterings are presented.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1269..262Y},
doi = {10.1063/1.3485145},
editor = {{I.~Tanihara, H.~J.~Ong, A.~Tamii, T.~Kishimoto, T.~Kajino, S.~Kubono, & T.~Shima}},
keywords = {radioactive ion beams, nuclear resonance reactions, quadrupole moments, atomic collisions, Radioactive wastes, waste disposal, Other resonances, Electromagnetic moments, Elastic and inelastic scattering},
series = {American Institute of Physics Conference Series}
}
@article{2010AIPC.1235..247Y,
title = {{Nuclear Astrophysics and Structure Studies Using Low-energy RI Beams at CRIB}},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S.},
journal = {American Institute of Physics Conference Series},
year = {2010},
month = may,
pages = {247-252},
volume = {1235},
abstract = {CRIB (CNS Radioactive Ion Beam separator) is a low-energy RI beam separator at the Center for Nuclear Study (CNS) of the University of Tokyo. Using the RI beams at CRIB, Many measurements on proton and alpha resonance scatterings, ($alpha$,p) reactions, and others were peformed in recent years, mainly for studying astrophysical reactions and exotic nuclear structure. Among them, the results on the $^{7}$Be+p and $^{7}$Li+$alpha$ resonance scatterings are presented.},
adsurl = {http://adsabs.harvard.edu/abs/2010AIPC.1235..247Y},
doi = {10.1063/1.3442603},
keywords = {nuclear structure, separation, proton scattering, alpha particle-nucleus reactions, neutrinos, Collective levels, Isotope separation and enrichment, Elastic proton scattering, Elastic and inelastic scattering, Neutrino scattering},
series = {American Institute of Physics Conference Series}
}
@article{2010nuco.confE.214Y,
title = {{Alpha-induced astrophysical reactions studied at CRIB}},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Dam Nguyen}, B. and {Kahl}, D. and {Kubono}, S.},
journal = {Proceedings of Science},
year = {2010},
pages = {214:1-6},
volume = {NIC-XI},
abstract = {CRIB (CNS Radioactive Ion Beam separator) is a low-energy RI beam separator at the Center for Nuclear Study (CNS) of the University of Tokyo. Studies on proton and alpha resonance scatterings, ($alpha$,,p) reactions, and other types of measurements ( $beta$-decay lifetimes etc.) have been performed using RI beams at CRIB, motivated by interests on astrophysical reactions and exotic nuclear structure. Among the studies at CRIB, the measurement of $^{7}$Li+$alpha$ resonant scattering is presented.},
adsurl = {http://adsabs.harvard.edu/abs/2010nuco.confE.214Y},
url = {http://pos.sissa.it/archive/conferences/100/214/NIC%20XI_214.pdf}
}
@article{2011AIPC.1409...63C,
title = {{Proton-Rich Sulphur and Nucleosynthesis in Classical Novae}},
author = {{Chen}, A.~A. and {Setoodehnia}, K. and {Chen}, J. and {Clark}, J.~A. and {Deibel}, C.~M. and {Geraedts}, S.~D. and {Kahl}, D. and {Parker}, P.~D. and {Seiler}, D. and {Wrede}, C.},
journal = {American Institute of Physics Conference Series},
year = {2011},
month = nov,
pages = {63-66},
volume = {1409},
abstract = {The structure of proton-unbound states in 30S and 31S is important for determining the 29P(p,γ)30S and 30P(p,γ)31S reaction rates, which influence explosive hydrogen burning in classical novae. The former reaction rate in this temperature regime had been previously predicted to be dominated by two low-lying, unobserved, Jπ = 3+ and 2+ resonances in 30S. To search for evidence for these levels, the structure of 30S was studied using the 32S(p,t)30S reaction with a magnetic spectrograph. We provide an update on the status of the ongoing analysis and some preliminary results.},
adsurl = {http://adsabs.harvard.edu/abs/2011AIPC.1409...63C},
doi = {10.1063/1.3664151},
editor = {{B.~Blank}},
keywords = {protons, nuclear explosions, resonance, isotopes, Protons and neutrons, Nuclear explosions, Other resonances, Atomic masses, mass spectra, abundances, and isotopes},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484...25B,
title = {{Measurement of $^{21}$Na({$alpha$},p)$^{24}$Mg stellar reaction using a $^{21}$Na RI-beam}},
author = {{Binh}, D.~N. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Hashimoto}, T. and {Kahl}, D. and {Teranishi}, T. and {Iwasa}, N. and {Kato}, S. and {Khiem}, L.~H. and {Tho}, N.~T. and {Wakabayashi}, Y.
},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {25-30},
volume = {1484},
abstract = {{We performed an experiment of the $^{21}$Na({$alpha$}p)$^{24}$Mg reaction for the first time by a direct measurement with a thick target method. The studied energy was covered for high temperature conditions in X-ray bursts and core-collapse supernovae. The $^{21}$Na({$alpha$}p)$^{24}$Mg reaction could make a branch of the extended {$alpha$}p-process and could be important to understand the production of $^{22}$Na during the hydrogen explosion at high temperature, like in X-ray bursts, and the $^{44}$Ti production from core-collapse supernovae. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484...25B},
doi = {10.1063/1.4763367},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {alpha particle-nucleus reactions, nuclei with mass number 20 to 38, supernovae},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484..454H,
title = {{Direct measurement of the $^{18}$Ne({$alpha$},p)$^{21}$Na reaction}},
author = {{Hashimoto}, T. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Kahl}, D.~M. and {Ota}, S. and {Michimasa}, S. and {Tokieda}, H. and {Ishiyama}, H. and {Watanabe}, Y.~X. and {Hirayama}, Y. and {Imai}, N. and {Miyatake}, H. and {Jeong}, S.~C. and {Yamaguchi}, K. and {Arai}, I. and {Komatsubara}, T. and {Fukuda}, T. and {Mizoi}, Y. and {Das}, S.~K. and {Iwasa}, N. and {Yamada}, T. and {Chen}, A.~A. and {He}, J.~J.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {454-456},
volume = {1484},
abstract = {{The excitation fuction of the $^{18}$Ne({$alpha$},p)$^{21}$Na reaction in was directry measured using a new active target detector system. We are analyzing accumulated data. We will report the result of the development of the GEM - MSTPC and the preliminary results of the $^{18}$Ne({$alpha$},p)$^{21}$Na a experiment. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..454H},
doi = {10.1063/1.4763451},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {alpha particle-nucleus reactions, nuclear energy levels, Level density, Transfer reactions},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484..445H,
title = {{Direct measurement of the breakout reaction $^{11}$C({$alpha$},p)$^{14}$N in explosive hydrogen-burning process}},
author = {{Hayakawa}, S. and {Kubono}, S. and {Kahl}, D. and {Yamaguchi}, H. and {Binh}, D.~N. and {Hashimoto}, T. and {Wakabayashi}, Y. and {He}, J.~J. and {Iwasa}, N. and {Kato}, S. and {Komatsubara}, T. and {Kwon}, Y.~K. and {Teranishi}, T. and {Wanajo}, S.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {445-447},
volume = {1484},
abstract = {{We determined the $^{11}$C({$alpha$},p)$^{14}$N reaction rate relevant to the nucleosynthesis in explosive hydrogen-burning stars. The measurement was performed by means of the thick target method in inverse kinematics with $^{11}$C RI beams. We derived the excitation functions for the ground-state transition and excited-state transitions using time-of-flight information for the first time. The present reaction rate is compared to the previous one. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..445H},
doi = {10.1063/1.4763448},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {alpha particle-nucleus reactions, nucleosynthesis, stellar internal processes, Stellar hydrogen burning, Nucleosynthesis in novae, supernovae, and other explosive environments, Stellar structure, interiors, evolution, nucleosynthesis, ages},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1498..339H,
title = {{Direct measurement of the $^{11}$C({$alpha$},p)$^{14}$N reaction at CRIB: A path from pp-chain to CNO}},
author = {{Hayakawa}, S. and {Kubono}, S. and {Kahl}, D. and {Yamaguchi}, H. and {Binh}, D.~N. and {Hashimoto}, T. and {Wakabayashi}, Y. and {He}, J.~J. and {Iwasa}, N. and {Kato}, S. and {Komatsubara}, T. and {Kwon}, Y.~K. and {Teranishi}, T. and {Wanajo}, S.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {339-343},
volume = {1498},
abstract = {{We determined the total reaction rate of the $^{11}$C({$alpha$},p)$^{14}$N reaction relevant to the nucleosynthesis in explosive hydrogen-burning stars. The measurement was performed by means of the thick target method in inverse kinematics with $^{11}$C RI beams. We performed the identification of the ground-state transition and excited-state transitions using time-of-flight information for the first time. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1498..339H},
doi = {10.1063/1.4768515},
editor = {{Trache}, L. and {Gina Isar}, P.},
keywords = {alpha particle-nucleus reactions, nucleosynthesis, $^{3}$H-, $^{3}$He-, and $^{4}$He-induced reactions, Stellar hydrogen burning, Stellar structure, interiors, evolution, nucleosynthesis, ages},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484..240H,
title = {{Study of resonant scattering of $^{21}$Na+p relevant to astrophysical $^{18}$Ne({$alpha$},p)$^{21}$Na reaction}},
author = {{He}, J.~J. and {Zhang}, L.~Y. and {Xu}, S.~W. and {Chen}, S.~Z. and {Hu}, J. and {Ma}, P. and {Chen}, R.~F. and {Yamaguchi}, H. and {Kubono}, S. and {Hashimoto}, T. and {Kahl}, D. and {Hayakawa}, S. and {Wakabayashi}, Y. and {Togano}, Y. and {Wang}, H.~W. and {Tian}, W.~D. and {Guo}, B. and {Teranishi}, T. and {Iwasa}, N. and {Yamada}, T. and {Komatsubara}, T.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {240-245},
volume = {1484},
abstract = {{Astrophysical $^{18}$Ne({$alpha$},p)$^{21}$Na reaction is one of the most probable breakout routes, which lead to the rp-process from the hot-CNO cycle, converting the initial CNO elements into heavier elements in Type I x-ray bursters. Presently, there is no much experimental cross-section data reported at the energy of astrophysical interest, and resonant spectroscopic information in compound $^{22}$Mg is scarce as well. The experiment has been carried out by using the CNS radioactive ion beam separator (CRIB). Resonant properties in $^{22}$Mg have been studied via the resonant elastic scattering of $^{21}$Na+p, and cross section of the time-reversal reaction of $^{21}$Na(p,{$alpha$})$^{18}$Ne been measured simultaneously. A wide excitation energy region up to Ex ~{} 9.5 MeV in $^{22}$Mg has been scanned with a thick-target method. Some preliminary results will be reported. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..240H},
doi = {10.1063/1.4763401},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {alpha particle-nucleus scattering, nucleosynthesis, X-ray sources (astronomical)},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484..307J,
title = {{Study of proton resonance structure in $^{27}$P via resonant elastic scattering of $^{26}$Si+p}},
author = {{Jung}, H.~S. and {Lee}, C.~S. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Lee}, J.~H. and {Yun}, C.~C. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Kahl}, D. and {Hayakawa}, S. and {Choi}, S. and {Kim}, M.~J. and {Kim}, Y.~H. and {Kim}, Y.~K. and {Park}, J.~S. and {Kim}, E.~J. and {Moon}, C.-B. and {Teranishi}, T. and {Wakabayashi}, Y. and {Iwasa}, N. and {Yamada}, T. and {Togano}, Y. and {Kato}, S. and {Cherubini}, S. and {Rapisarda}, G.~G.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {307-312},
volume = {1484},
abstract = {{A measurement of resonant elastic scattering of $^{26}$Si+p was performed with a thick target using a $^{26}$Si radioactive ion beam at the CRIB (CNS Radioactive Ion Beam separator) of the Center for Nuclear Study (CNS), the University of Tokyo. The excitation function of $^{27}$P was measured successfully with the inverse kinematics method through a covered the range of excitation energies from Ex ~{} 2.3 to 3.8 MeV, providing information about the resonance structure of this nucleus. The properties of these resonances are important to better determine the production rates of $^{26}$Si(p,g)$^{27}$P reaction, which is one of the astrophysically important nuclear reactions to understand the production of the $^{26}$Al. Some new resonant states have been investigated, and determined their resonance parameters, such as excitation energies, proton partial widths, and spin-parities by R-matrix calculation. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..307J},
doi = {10.1063/1.4763412},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {nuclear energy levels, nuclear resonance scattering, nuclear spin, nuclei with mass number 20 to 38, proton radiative capture, proton-nucleus scattering, Spin, parity, and isobaric spin, Level density, Resonance reactions, Elastic proton scattering, Radiative capture, 20{lt}=A{lt}=38},
series = {American Institute of Physics Conference Series}
}
@article{2012nuco.confE.200J,
title = {{Experimental study of resonant states in $^{26}$Si and $^{27}$P via elastic scattering of $^{25}$Al+p and $^{26}$Si+p}},
author = {{Jung}, H.~S. and {Lee}, C.~S. and {Moon}, J.~Y. and {Kwon}, Y.~K. and {Lee}, J.~H. and {Yun}, C.~C. and {Kubono}, S. and {Yamaguchi}, H. and {Kahl}, D.},
journal = {Proceedings of Science},
year = {2012},
pages = {200:1-6},
volume = {NIC XII},
abstract = {The rapid proton capture process (rp process) is a dominant reaction sequence in explosive hydrogen burning that synthesizes heavier elements, especially proton-rich unstable nuclides. Therefore, accurate thermonuclear reaction rates for (p,$gamma$) reactions on the rp process path are essential for an understanding of the nucleosynthesis processes and energy production. We studied proton resonant states in $^{26}$Si and $^{27}$P via elastic scattering in inverse kinematics at the low-energy RI beam facility CRIB (CNS Radioactive Ion Beam separator), University of Tokyo. By using a thick H$_{2}$ gas target, excitation energies range of 6.8 to 8.2 MeV in $^{26}$Si and 2.3 to 3.8 MeV in $^{27}$P were scanned, respectively. Several resonances above the proton threshold level were observed with high statistics and free from any background contribution in the target. Their resonance parameters were subsequently extracted by an R-matrix analysis; these are important to better constrain the production rates of the $^{25}$Al(p,$gamma$)$^{26}$Si and $^{26}$Si(p,$gamma$)$^{27}$P reactions.},
url = {http://pos.sissa.it/archive/conferences/146/200/NIC%20XII_200.pdf}
}
@article{2012nuco.confE.201K,
title = {{Measurement of the $^{30}$S + $alpha$ system for type I X-ray bursts}},
author = {{Kahl}, D. and {Chen}, A.~A. and {Kubono}, S. and {Hashimoto}, T. and {Binh}, D.~N. and {Chen}, J. and {Cherubini}, S. and {Duy}, N.~N. and {Hayakawa}, S. and {Iwasa}, N. and {Jung}, H.~S. and {Kato}, S. and {Kwon}, Y.~K. and {Michimasa}, S. and {Nishimura}, S. and {Ota}, S. and {Setoodehnia}, K. and {Teranishi}, T. and {Tokieda}, H. and {Yamada}, T. and {Yamaguchi}, H. and {Yun}, C.~C. and {Zhang}, L.~Y.},
journal = {Proceedings of Science},
year = {2012},
pages = {201:1-5},
volume = {NIC XII},
abstract = {The $^{30}$S($alpha$,,p) reaction is considered to be important in the nuclear trajectory to higher mass in type I X-ray bursts. The reaction flow encounters a bottle-neck at $^{30}$S, owing to the competition of photo-disintegration with further proton capture, and because the half-life of this isotope is on the order of the burst rise timescale. Different burst simulations by various researchers indicate the ($alpha$,,p) reaction may by-pass this waiting point, depending on the stellar reaction rate, which has not previously been measured experimentally, and the structure of the compound nucleus $^{34}$Ar is not well understood above the alpha-threshold. The $^{30}$S($alpha$,,p) reaction could explain rare bolometrically double-peaked burst profiles, appears to make a considerable contribution to the overall energy generation, and affects the neutron star crustal composition for the recurrent inertia required in burst models to reproduce astronomical observations. Using a low-energy $^{30}$S radioactive ion beam and an active target technique (a helium gas mixture serves as both a target gas and a detector fill gas), we acquired data on both alpha elastic scattering of $^{30}$S as well as the $^{30}$S($alpha$,,p) reaction simultaneously at relevant energies for X-ray bursts. We present for the first time the status of the data analysis and the preliminary results of this research.},
url = {http://pos.sissa.it/archive/conferences/146/201/NIC%20XII_201.pdf}
}
@article{2012nuco.confE.206K,
title = {{Study of level structure on $^{26}$Si for the astrophysical interest in $^{26}$Al production}},
author = {{Komatsubara}, T. and {Ozawa}, A. and {Moriguchi}, T. and {Ito}, Y. and {Itabashi}, Y. and {Abe}, Y. and {Yuasa}, T. and {Hayakawa}, T. and {Shizuma}, T. and {Hara}, K. and {Kubono}, S. and {Yamaguchi}, H. and {Kahl}, D. and {Hayakawa}, S. and {Binh}, D.~N. and {Chen}, A.~A. and {Chen}, J. and {Setoodehnia}, K. and {Kajino}, T.},
journal = {Proceedings of Science},
year = {2012},
pages = {206:1-6},
volume = {NIC XII},
abstract = {A radio-isotope of $^{26g}$Al (where g is expressing the ground state) is known as a $gamma$-ray emitter spreading in the Milky Way galaxy. Since the half-life is only 7.2 $times$ 10$^{5}$ year this is the obvious evidence of ongoing nucleosynthesis in our galaxy. This isotope is also known as an origin of abundance-anomaly of $^{26}$Mg observed in meteorites. Therefore, investigations of production rates for the $^{26g}$Al are quite important for the nucleosynthesis occurring in massive star, classical nova and super nova. Although, there is still some uncertainties in the nuclear structure of $^{26}$Si which is located at the bypass sequence producing the isomeric state $^{26m}$Al (where m is expressing the metastable 1st excited state). For the comprehensive understanding of the nuclear reaction rate to produce the $^{26g}$Al, we have done $gamma$-ray spectroscopy to investigate the level structure for the $^{26}$Si. We confirmed the presence of a recently proposed level located just above the proton threshold. Furthermore, as a result of the gamma-ray angular correlation measurements we could assign the spin of this level as 0$^{+}$. },
url = {http://pos.sissa.it/archive/conferences/146/206/NIC%20XII_206.pdf}
}
@article{2012AIPC.1484..189K,
title = {{Experimental challenge to nuclear physics problems in the {$nu$}p-process}},
author = {{Kubono}, S. and {Binh}, D.~N. and {Hayakawa}, S. and {Hashimoto}, T. and {Kahl}, D.~M. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Teranishi}, T. and {Iwasa}, N. and {Komatsubara}, T. and {Kato}, S. and {Chen}, A. and {Cherubini}, S. and {Choi}, S.~H. and {Hahn}, I.~S. and {He}, J.~J. and {Khiem}, L.~H. and {Lee}, C.~S. and {Kwon}, Y.~K. and {Wanajo}, S. and {Janka}, H.-T.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {189-196},
volume = {1484},
abstract = {{Astrophysical stellar reactions at extremely high temperatures involve a variety of problems both in nuclear reactions and nuclear structures. Specifically, the problems in the {$nu$}pprocess were discussed in this talk based on our recent experimental results with low-energy RI beams and a simulation study. The {$nu$}p-process is one of the key processes for investigating the mechanism of type II supernovae, and the process could be possibly responsible for ''the excess production'' of p-nuclei around mass 90-100. Alpha cluster resonances have been discovered experimentally to play a crucial role for the stellar ({$alpha$}, p) reactions just above the alpha threshold. Neutron induced reactions in the proton-rich nuclear regions in the {$nu$}p-process are also suggested to play an important role, which involve nuclear structures of high level density at high excitation energies, probably giant resonances. The discussion also covered the p-nuclei production through the {$nu$}p-process at around mass 100. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..189K},
doi = {10.1063/1.4763394},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {alpha particle-nucleus reactions, giant resonances, nuclear cluster model, nuclear density, nuclear energy levels, nuclear mass, nuclear reaction theory, nuclear structure theory, supernovae, Properties of nuclei; nuclear energy levels, Binding energies and masses, Level density, Cluster models, Nuclear reaction models and methods, Giant resonances, $^{3}$H-, $^{3}$He-, and $^{4}$He-induced reactions, Nucleosynthesis in novae, supernovae, and other explosive environments, Nuclear physics aspects of novae, supernovae, and other explosive environments, Supernovae},
series = {American Institute of Physics Conference Series}
}
@article{2012PThPS.196..346K,
title = {{Alpha-Cluster Dominance in the {$alpha$}p Process in Explosive Hydrogen Burning}},
author = {{Kubono}, S. and {Dam}, N. and {Hayakawa}, S. and {Hashimoto}, H. and {Kahl}, D. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Teranishi}, T. and {Iwasa}, N. and {Komatsubara}, T. and {Kato}, S. and {Chen}, A. and {Cherubini}, S. and {Choi}, S. and {Hahn}, I. and {He}, J. and {Le}, H.~K. and {Lee}, C. and {Kwon}, Y. and {Wanajo}, S. and {Janka}, H.},
journal = {Progress of Theoretical Physics Supplement},
year = {2012},
pages = {346-351},
volume = {196},
abstract = {{Nucleosynthesis by alpha particles and heavier 4n nuclei are of great interest as they would involve nuclear cluster resonances. The role of nuclear clustering is discussed for nucleosynthesis with the Cluster Nucleosynthesis Diagram (CND) proposed before, especially those involving alpha induced reactions, based on our recent works of ({$alpha$},p) reactions with low energy RI beams. We present experimental results that alpha resonances play a crucial role for the ({$alpha$},p) reaction cross sections. Molecular resonances are also briefly discussed along this line for O- and C-burning. }},
adsurl = {http://adsabs.harvard.edu/abs/2012PThPS.196..346K}
}
@article{2012AIPC.1484..365K,
title = {{Measurement of $^{25}$Al+p resonant elastic scattering for studying the $^{25}$Al(p,{$gamma$})$^{26}$Si}},
author = {{Kwon}, Y.~K. and {Lee}, C.~S. and {Jung}, H.~S. and {Moon}, J.~Y. and {Lee}, J.~H. and {Yun}, C.~C. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Kahl}, D. and {Hayakawa}, S. and {Choi}, S. and {Kim}, M.~J. and {Kim}, Y.~H. and {Kim}, Y.~K. and {Park}, J.~S. and {Kim}, E.~J. and {Moon}, C.-B. and {Teranishi}, T. and {Wakabayashi}, Y. and {Iwasa}, N. and {Yamada}, T. and {Togano}, Y. and {Kato}, S. and {Cherubini}, S. and {Rapisarda}, G.~G.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {365-368},
volume = {1484},
abstract = {{Proton resonant states in $^{26}$Si have been studied by the resonant elastic scattering of $^{25}$Al+p with a $^{25}$Al radioactive ion beam at 2.863 MeV/nucleon bombarding a thick H$_{2}$ gas target with the inverse kinematics method at the low-energy RI beam facility CRIB (CNS Radioactive Ion Beam separator), University of Tokyo. The properties of these resonance states are important to better determine the production rates of $^{25}$Al(p,{$gamma$})$^{26}$Si reaction, which is one of the astrophysically important nuclear reactions to understand the production of the ground state of $^{26}$Al, the emitter of its characteristic 1.809-MeV gamma-ray, under the explosive stellar environments such as novae and X-ray bursts. In this work, several resonances above the proton threshold level have been observed with a high statistics and background free through a covered the range of excitation energies from Ex ~{} 6.8 to 8.2 MeV. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..365K},
doi = {10.1063/1.4763422},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {nuclear energy levels, nuclei with mass number 20 to 38, proton radiative capture, proton-nucleus scattering, Level density, Elastic proton scattering, Radiative capture, 20{lt}=A{lt}=38},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484...19W,
title = {{Indirect measurements of reactions in hot p-p chain and CNO cycles}},
author = {{Wang}, Y.~B. and {Guo}, B. and {Jin}, S.~J. and {Li}, Z.~H. and {Binh}, D.~N. and {Hashimoto}, H. and {Hayakawa}, S. and {He}, J.~J. and {Hu}, J. and {Iwasa}, N. and {Kahl}, D.~M. and {Kubono}, S. and {Kume}, N. and {Li}, E.~T. and {Li}, Y.~J. and {Liu}, X. and {Su}, J. and {Xu}, S.~W. and {Yamaguchi}, H. and {Yan}, S.~Q. and {Zeng}, S. and {Bai}, X.~X. and {Lian}, G. and {Wang}, B.~X. and {Liu}, W.~P.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {19-24},
volume = {1484},
abstract = {{Several reactions have been experimentally studied, including the $^{12}$N(d,n)$^{13}$O and the ones induced by the $^{3}$He+$^{12}$C entrance channel. The former was carried out at the CRIB facility of University of Tokyo, aiming to indirectly determine the astrophysical reaction rates of the $^{12}$N(p,{$gamma$})$^{13}$O reaction. For the $^{3}$He+$^{12}$C entrance channel, many excited states of several nuclei are populated and the angular distribution of each state is being analyzed. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484...19W},
doi = {10.1063/1.4763366},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {deuteron-nucleus reactions, heavy ion-nucleus scattering, nuclear energy levels, nuclei with mass number 6 to 19, proton radiative capture, Level density, Angular distribution and correlation measurements, Radiative capture, Elastic and quasielastic scattering, 6{lt}=A{lt}=19, Elementary particle processes},
series = {American Institute of Physics Conference Series}
}
@article{2012AIPC.1484..225Y,
title = {{Alpha-induced reaction studies using low-energy RI beams at CRIB}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Hu}, J. and {Kubono}, S. and {Hayakawa}, S. and {Hashimoto}, T.},
journal = {American Institute of Physics Conference Series},
year = {2012},
month = nov,
pages = {225-231},
volume = {1484},
abstract = {{CRIB (CNS Radioactive Ion Beam separator) is a low-energy RI beam separator at the Center for Nuclear Study (CNS) of the University of Tokyo. Studies on proton and alpha resonance scatterings, ({$alpha$}, p) reactions, and other types of measurements ({$beta$}-decay lifetimes etc.) have been performed using RI beams at CRIB, motivated by interests on astrophysical reactions and exotic nuclear structure. Among the studies at CRIB, the measurement of $^{7}$Li+{$alpha$}/$^{7}$Be+{$alpha$} resonant scatterings are presented. }},
adsurl = {http://adsabs.harvard.edu/abs/2012AIPC.1484..225Y},
doi = {10.1063/1.4763399},
editor = {{Kubono}, S. and {Hayakawa}, T. and {Kajino}, T. and {Miyatake}, H. and {Motobayashi}, T. and {Nomoto}, K.},
keywords = {alpha particle-nucleus scattering, nuclear resonance scattering, nuclear structure, nuclei with mass number 6 to 19, Resonance reactions, Elastic and inelastic scattering, 6{lt}=A{lt}=19, Elementary particle processes},
series = {American Institute of Physics Conference Series}
}
@article{2012nuco.confE.244Y,
title = {{Recent astrophysical studies at the low-energy RI beam separator CRIB}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Nakao}, T. and {Kubono}, S},
journal = {Proceedings of Science},
year = {2012},
pages = {244:1-6},
volume = {NIC XII},
abstract = {CRIB (CNS Radioactive Ion Beam separator) is a low-energy RI beam separator at Center for Nuclear Study (CNS) of the University of Tokyo. Studies on proton and alpha resonance scatterings, ($alpha$,p) reactions, and other types of measurements ( $beta$-decay lifetimes etc.) have been performed using RI beams at CRIB, motivated by interests on astrophysical reactions and exotic nuclear structure. Among the studies at CRIB, the measurement of $^{7}$Be+$alpha$ resonant scattering is presented.},
url = {http://pos.sissa.it/archive/conferences/146/244/NIC%20XII_244.pdf}
}
@article{2012nuco.confE.186Z,
title = {{Experimental Study of the Key $^{18}$Ne($alpha$,p)$^{21}$Na reaction}},
author = {{Zhang}, L.~Y. and {He}, J.~J. and {Xu}, S.~W. and {Yamaguchi}, H. and {Kubono}, S. and {Wakabayashi}, Y. and {Chen}, S.~Z. and {Hu}, J. and {Ma}, P. and {Togano}, Y. and {Hashimoto}, T. and {Kahl}, D. and {Teranishi}, T. and {Chen}, R.~F. and {Wang}, H.~W. and {Tian}, W.~D. and {Guo}, B. and {Hayakawa}, S. and {Iwasa}, N. and {Yamada}, T. and {Komatsubara}, T.},
journal = {Proceedings of Science},
year = {2012},
pages = {186:1-5},
volume = {NIC XII},
abstract = {The $^{18}$Ne($alpha$, p)$^{21}$Na reaction is thought to be one of the key breakout reaction from the hot CNO cycle to the rp-process in X-ray bursts. We investigated the resonant properties of the compoundnucleus $^{22}$Mg by measuring the resonant elastic scattering of $^{21}$Na+p. An 89 MeV $^{21}$Na radioactive beam was produced by CRIB and then bombarded a 93-$mu$m-thick polyethylene target. The $^{21}$Na beam intensity was about 2$times$10$^{5}$ pps, with a purity of about 70% on the target. The recoiled protons were measured by three sets of $Delta$E-E telescope respectively. A wide excitation energy range of 5.5-9.2 MeV in $^{22}$Mg was scanned with a thick-target method. Some preliminary results are shown.},
url = {http://pos.sissa.it/archive/conferences/146/186/NIC%20XII_186.pdf}
}
@article{2013cgrs.conf..365C,
title = {{$^{26}$Si Excited States via One-Neutron Removal from $^{27}$Si Using Radioactive Beam}},
author = {{Chen}, J. and {Chen}, A.~A. and {Amthor}, A.~M. and {Bazin}, D. and {Becerril}, A.~D. and {Gade}, A. and {Galaviz}, D. and {Glasmacher}, T. and {Kahl}, D. and {Lorusso}, G. and {Matos}, M. and {Ouellet}, C.~V. and {Pereira}, J. and {Schatz}, H. and {Smith}, K.~M. and {Wales}, B. and {Weisshaar}, D. and {Zegers}, R.~G.~T.},
journal = {Capture Gamma-Ray Spectroscopy and Related Topics - Proceedings of the Fourteenth International Symposium},
year = {2013},
month = mar,
pages = {365-370},
abstract = {A measurement of the p(27Si, d)26Si reaction has been performed to study levels of 26Si, with connections to the stellar 25Al(p, γ)26Si reaction rate. A beam of adioactive 27Si of energy 84.3 MeV/A was impinged on a polypropylene foil (CH2) of 180 mg/cm2 in thickness. De-excitation γ-rays were detected with a highly-segmented germanium detector array, in coincidence with the 26Si recoils. Our results are an independent measurement of states used in the energy calibration of other experiments on 26Si structure. They also suggest that the spin-parity of the Ex(26Si) = 6454 keV (Er = 940 keV) state should be 4+ instead of the previously adopted assignment of 0+.},
adsurl = {http://adsabs.harvard.edu/abs/2013cgrs.conf..365C},
doi = {10.1142/9789814383646_0048},
editor = {{Garrett}, P.~E. and {et al.}}
}
@article{2013JPhCS.436a2071K,
title = {{Role of clusters in nuclear astrophysics with Cluster Nucleosynthesis Diagram (CND)}},
author = {{Kubono}, S. and {Binh}, D.~N. and {Hayakawa}, S. and {Hashimoto}, H. and {Kahl}, D. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Teranishi}, T. and {Iwasa}, N. and {Komatsubara}, T. and {Kato}, S. and {Chen}, A. and {Cherubini}, S. and {Choi}, S.~H. and {Hahn}, I.~S. and {He}, J.~J. and {Khiem}, L.~H. and {Lee}, C.~S. and {Kwon}, Y.~K. and {Wanajo}, S. and {Janka}, H.-T.},
journal = {Journal of Physics Conference Series},
year = {2013},
month = apr,
number = {1},
pages = {012071},
volume = {436},
abstract = {The role of nuclear clustering in stellar reactions is discussed, with Cluster Nucleosynthesis Diagram (CND) proposed before, for nucleosynthesis in stellar evolution and explosive stellar phenomena. Special emphasis is placed on α-induced stellar reactions. We report here the first experimental evidence that a cluster resonances dominate the (α,p) stellar reaction cross sections that is crucial for the vp-process in core-collapse supernovae.},
adsurl = {http://adsabs.harvard.edu/abs/2013JPhCS.436a2071K},
doi = {10.1088/1742-6596/436/1/012071},
eid = {012071}
}
@article{2013AIPC.1533...70K,
title = {{Experimental challenge to nucleosynthesis in core-collapse supernovae - Very early epoch of type II SNe -}},
author = {{Kubono}, S. and {Binh}, D.~N. and {Hayakawa}, S. and {Hashimoto}, T. and {Kahl}, D.~M. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Teranishi}, T. and {Iwasa}, N. and {Komatsubara}, T. and {Kato}, S. and {Chen}, A. and {Cherubini}, S. and {Choi}, S.~H. and {Hahn}, I.~S. and {He}, J.~J. and {Khiem}, L.~H. and {Lee}, C.~S. and {Kwon}, Y.~K. and {Wanajo}, S. and {Janka}, H.-T.},
journal = {American Institute of Physics Conference Series},
year = {2013},
month = may,
pages = {70-77},
volume = {1533},
abstract = {Nucleosynthesis is one of the keys in studying the mechanism of core-collapse supernovae, which is an interesting challenge for modern science. The νp-process, which is similar to an explosive hydrogen burning process, has been proposed as the most probable process in the very early epoch of type II supernovae. Here, we discuss our experimental efforts for the νp-process, the first extensive direct measurements of the (α,p) reactions on bottle-neck proto-rich nuclei in light mass regions. Other challenges for the νp-process study are also discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2013AIPC.1533...70K},
doi = {10.1063/1.4806779},
editor = {{Liu}, W. and {Hatanaka}, K. and {Zhu}, S. and {Aoi}, N.},
series = {American Institute of Physics Conference Series}
}
@article{2013AIPC.1525..552T,
title = {{Resonant scattering experiments with radioactive nuclear beams - Recent results and future plans}},
author = {{Teranishi}, T. and {Sakaguchi}, S. and {Uesaka}, T. and {Yamaguchi}, H. and {Kubono}, S. and {Hashimoto}, T. and {Hayakawa}, S. and {Kurihara}, Y. and {Bihn}, D.~N. and {Kahl}, D. and {Wakabayashi}, Y. and {Khiem}, L.~H. and {Cuong}, P.~V. and {Watanabe}, S. and {Goto}, A.},
journal = {American Institute of Physics Conference Series},
year = {2013},
month = apr,
pages = {552-557},
volume = {1525},
abstract = {Resonant scattering with low-energy radioactive nuclear beams of E < 5 MeV/u have been studied at CRIB of CNS and at RIPS of RIKEN. As an extension to the present experimental technique, we will install an advanced polarized proton target for resonant scattering experiments. A Monte-Carlo simulation was performed to study the feasibility of future experiments with the polarized target. In the Monte-Carlo simulation, excitation functions and analyzing powers were calculated using a newly developed R-matrix calculation code. A project of a small-scale radioactive beam facility at Kyushu University is also briefly described.},
adsurl = {http://adsabs.harvard.edu/abs/2013AIPC.1525..552T},
doi = {10.1063/1.4802389},
editor = {{McDaniel}, F.~D. and {Doyle}, B.~L. and {Glass}, G.~A. and {Wang}, Y.},
keywords = {Monte Carlo methods, polarised targets, radioactive ion beams, Applications of Monte Carlo methods, Particle sources and targets, Polarized and other targets, Radioactive beams},
series = {American Institute of Physics Conference Series}
}
@article{2013NIMPB.317..664Y,
title = {{Recent developments and research projects at the low-energy RI beam facility CRIB}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Nakao}, T. and {Wakabayashi}, Y. and {Kubono}, S. and {Hashimoto}, T. and {Hayakawa}, S. and {Kawabata}, T. and {Iwasa}, N. and {Teranishi}, T. and {Kwon}, Y.~K. and {Binh}, D.~N. and {Khiem}, L.~H. and {Duy}, N.~N.},
journal = {Nuclear Instruments and Methods in Physics Research B},
year = {2013},
month = dec,
pages = {664-667},
volume = {317},
abstract = {CRIB (CNS Radioactive Ion Beam separator) is a low-energy RI beam separator at the Center for Nuclear Study (CNS) of the University of Tokyo. An overview of the recent developments and status of CRIB, including a detailed summary of beam parameters, is presented. Studies on proton and α resonant scatterings, direct measurements of (α,p) reactions, and other types of measurements (β-decay lifetimes, etc.) have been performed using RI beams at CRIB, motivated by interests in astrophysical reactions and exotic nuclear structure. Among the studies at CRIB, the measurement of 7Be + α resonant scattering is discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2013NIMPB.317..664Y},
doi = {10.1016/j.nimb.2013.05.090}
}
@article{2013NIMPB.317..785Y,
title = {{Wear diagnostics of industrial material using RI beams of $^{7}$Be and $^{22}$Na}},
author = {{Yoshida}, A. and {Kambara}, T. and {Nakao}, A. and {Uemoto}, R. and {Uno}, H. and {Nagano}, A. and {Yamaguchi}, H. and {Nakao}, T. and {Kahl}, D. and {Yanagisawa}, Y. and {Kameda}, D. and {Ohnishi}, T. and {Fukuda}, N. and {Kubo}, T.},
journal = {Nuclear Instruments and Methods in Physics Research B},
year = {2013},
month = dec,
pages = {785-788},
volume = {317},
abstract = {{As a possible example of radioactive ion (RI) beams for industrial application, intense beams of $^{7}$Be and $^{22}$Na used for wear diagnostics of mechanical parts is considered. For wear diagnostics, radioactive nuclei which have appropriate long life-time such as from several weeks to a few years are applicable. As those nuclei are located near the stable line, an in-flight RI beam separator can provide intense RI beams with enough high energy for implantation in atmosphere. Beam studies were performed to evaluate the intensity, uniformity, and depth profile of the implanted RI. We could achieve peak activity of 1.3 and 0.08 (kBq/{$mu$}m)/(1 p{$mu$}A {times} 1 h irradiation) at 13 and 50 {$mu$}m peak depth with 20 and 150 {$mu$}m maximum depth from the surface of an aluminum sample for $^{7}$Be and $^{22}$Na, respectively. }},
adsurl = {http://adsabs.harvard.edu/abs/2013NIMPB.317..785Y},
doi = {10.1016/j.nimb.2013.04.038}
}
@article{2014AIPC.1594..176H,
title = {{Astrophysics studies relevant to stellar x-ray bursts}},
author = {{He}, J.~J. and {Hu}, J. and {Zhang}, L.~Y. and {Xu}, S.~W. and {Parikh}, A. and {Yamaguchi}, H. and {Kahl}, D. and {Ma}, P. and {Chen}, S.~Z. and {Su}, J. and {Wakabayashi}, Y. and {Togano}, Y. and {Hayakawa}, S. and {Wang}, H.~W. and {Tian}, W.~D. and {Chen}, R.~F. and {Guo}, B. and {Nakao}, T. and {Teranishi}, T. and {Moon}, J.~Y. and {Jung}, H.~S. and {Hashimoto}, T. and {Chen}, A.~A. and {Irvine}, D. and {Hahn}, K.~I. and {Iwasa}, N. and {Yamada}, T. and {Komatsubara}, T. and {Lee}, C.~S. and {Kubono}, S.},
journal = {American Institute of Physics Conference Series},
year = {2014},
month = may,
pages = {176-183},
volume = {1594},
abstract = {Two reactions of 14O(α,p)17F and 18Ne(α,p)21Na provide the pathways for breakout from the hot CNO cycles to the rp-process in type I X-ray bursts. To better determine their astrophysical reaction rates, resonance parameters of the compound nuclei 18Ne and 22Mg have been investigated by the resonant elastic scattering of 17F+p and 21Na+p, respectively. The 17F and 21Na radioactive ion beams were produced at the CNS Radioactive Ion Beam Separator and impinged on the thick proton targets. The excitation functions were obtained with a thick-target method over a wide excitation energy range. The resonance parameters in the compound nuclei 18Ne and 22Mg have been determined through an R-matrix analysis. New reaction rates of these two (α,p) reactions are recalculated. The astrophysical impact for the 18Ne(α,p)21Na reaction has been investigated through one-zone postprocessing X-ray burst calculations.},
adsurl = {http://adsabs.harvard.edu/abs/2014AIPC.1594..176H},
doi = {10.1063/1.4874064},
editor = {{Jeong}, S. and {Imai}, N. and {Miyatake}, H. and {Kajino}, T. },
series = {American Institute of Physics Conference Series}
}
@article{2014AIPC.1594..163K,
title = {{Active target studies of the {$alpha$}p-process at CRIB}},
author = {{Kahl}, D. and {Hashimoto}, T. and {Duy}, N.~N. and {Kubono}, S. and {Yamaguchi}, H. and {Binh}, D.~N. and {Chen}, A.~A. and {Cherubini}, S. and {Hayakawa}, S. and {He}, J.~J. and {Ishiyama}, H. and {Iwasa}, N. and {Khiem}, L.~H. and {Kwon}, Y.~K. and {Michimasa}, S. and {Nakao}, T. and {Ota}, S. and {Teranishi}, T. and {Tokieda}, H. and {Wakabayashi}, Y. and {Yamada}, T. and {Zhang}, L.~Y.},
journal = {American Institute of Physics Conference Series},
year = {2014},
month = may,
pages = {163-170},
volume = {1594},
abstract = {The αp-process is a sequence of (α, p)(p, γ) reactions important to the nuclear trajectory to higher masses in type I X-ray bursts. Specifically, the αp-process is schematically pure helium-burning, and thus unlike pure hydrogen-burning processes, does not require slow β+ decays. Explosive helium burning is responsible for the observed short rise-times of X-ray bursts but ultimately gives way to the rp-process as the Coulomb barrier increases. Because the stellar reaction rates of these (α, p) reactions are poorly known over the relevant astrophysical energies, we performed systematic studies of the 18Ne(α,p), 22Mg(α,p) and 30S(α,p) reactions at the Center for Nuclear Study (CNS) low-energy radioactive ion beam separator, called CRIB. We produce the radioactive beams in-flight and scan the center-of-mass energy down into the Gamow Window using a thick target in inverse kinematics. The helium target gas also serves as part of the detector system, an active target, which was newly designed for these measurements. The active target, which uses gas electron multiplier (GEM) foils, allows for higher beam injection rates than previous multi-sampling and tracking proportional counters (MSTPC). We present a summary of our recent results from these active target experiments at CRIB.},
adsurl = {http://adsabs.harvard.edu/abs/2014AIPC.1594..163K},
doi = {10.1063/1.4874062},
editor = {{Jeong}, S. and {Imai}, N. and {Miyatake}, H. and {Kajino}, T.},
series = {American Institute of Physics Conference Series}
}
@article{2014AIPC.1595..114K,
title = {{Low-energy RI beam technology and nuclear clusters in the explosive pp-chain breakout process}},
author = {{Kubono}, S. and {Yamaguchi}, H. and {Teranishi}, T. and {Yanagisawa}, Y. and {Hayakawa}, S. and {Kahl}, D.~M. and {Kwon}, Y.~K. and {Hashimoto}, T. and {Wakabayashi}, Y. and {He}, J.~J. and {Ohshiro}, Y. and {Watanabe}, S. and {Yamazaki}, N. and {Goto}, A. and {Kase}, M. and {Fukuda}, Y. and {Muto}, H.},
journal = {American Institute of Physics Conference Series},
year = {2014},
month = may,
pages = {114-121},
volume = {1595},
abstract = {The lecture includes two parts: One is a discussion on the technology for developing RIB beam facility based on the in-flight method and relevant experimental technology. The second part is a discussion on experimental efforts for studying the breakout process from the pp-chain region based on recent works with low energy RI beams. The discussion of the second part specifically covers the problem of the vp-process in type II supernovae in terms of alpha cluster nature for the reactions.},
adsurl = {http://adsabs.harvard.edu/abs/2014AIPC.1595..114K},
doi = {10.1063/1.4875296},
series = {American Institute of Physics Conference Series}
}
@article{2014JPhCS.569a2019Y,
title = {{Nuclear clusters studied with alpha resonant scatterings using RI beams at CRIB}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Nakao}, T. and {Wakabayashi}, Y. and {Hashimoto}, T. and {Hayakawa}, S. and {Kawabata}, T. and {Teranishi}, T. and {Kwon}, Y.~K. and {Binh}, D.~N. and {Khiem}, L.~H. and {Duy}, N.~N. and {Kubono}, S. and {Suhara}, T. and {Kanada-En'yo}, Y. and {Moon}, J.~Y. and {Kim}, A. and {Iwasa}, N. and {Lee}, P.~S. and {Chae}, K.~Y. and {Cha}, S.~M. and {Gwak}, M.~S. and {Kim}, D.~H. and {Milman}, E. },
journal = {Journal of Physics Conference Series},
year = {2014},
month = dec,
number = {1},
pages = {012019},
volume = {569},
abstract = {Alpha resonant scattering is a simple and promising method to study α-cluster structure in nuclei. It has several good features which enable us to perform measurements with short-lived and relatively low-intense RI beams.
Several measurements on alpha resonant scattering have been carried out at CRIB (CNS Radioactive Ion Beam separator), which is a low-energy RI beam separator at Center for Nuclear Study (CNS) of the University of Tokyo. Recent α resonant scattering studies at CRIB, using 7Li, 7Be and 10Be beams with a helium gas target, are discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2014JPhCS.569a2019Y},
doi = {10.1088/1742-6596/569/1/012019},
eid = {012019}
}
@article{2014AIPC.1594..220Y,
title = {{Alpha resonant scattering for astrophysical reaction studies}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Nakao}, T. and {Wakabayashi}, Y. and {Kubano}, S. and {Hashimoto}, T. and {Hayakawa}, S. and {Kawabata}, T. and {Iwasa}, N. and {Teranishi}, T. and {Kwon}, Y.~K. and {Binh}, D.~N. and {Khiem}, L.~H. and {Duy}, N.~G.},
journal = {American Institute of Physics Conference Series},
year = {2014},
month = may,
pages = {220-225},
volume = {1594},
abstract = {Several alpha-induced astrophysical reactions have been studied at CRIB (CNS Radioactive Ion Beam separator), which is a low-energy RI beam separator at Center for Nuclear Study (CNS) of the University of Tokyo. One of the methods to study them is the α resonant scattering using the thick-target method in inverse kinematics. Among the recent studies at CRIB, the measurement of 7Be+α resonant scattering is discussed. Based on the result of the experiment, we evaluated the contributions of high-lying resonances for the 7Be(α,γ) reaction, and proposed a new cluster band in 11C.},
adsurl = {http://adsabs.harvard.edu/abs/2014AIPC.1594..220Y},
doi = {10.1063/1.4874072},
editor = {{Jeong}, S. and {Imai}, N. and {Miyatake}, H. and {Kajino}, T. },
series = {American Institute of Physics Conference Series}
}
@inproceedings{2014EPJWC..6607027Y,
title = {{Studies on alpha-induced astrophysical reactions using the low-energy RI beam separator CRIB}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Nakao}, T. and {Wakabayashi}, Y. and {Kubono}, S. and {Hashimoto}, T. and {Hayakawa}, S. and {Kawabata}, T. and {Iwasa}, N. and {Teranishi}, T. and {Kwon}, Y.~K. and {Lee}, P.~S. and {Binh}, D.~N. and {Khiem}, L.~H. and {Duy}, N.~G.},
booktitle = {European Physical Journal Web of Conferences},
year = {2014},
month = mar,
pages = {7027},
series = {European Physical Journal Web of Conferences},
volume = {66},
abstract = {Several alpha-induced astrophysical reactions have been studied at CRIB (CNS Radioactive Ion Beam separator), which is a low-energy RI beam separator at Center for Nuclear Study (CNS) of the University of Tokyo. Two major methods to study them are the α resonant scattering, and direct measurements of (α,p) reactions using an active or inactive helium gas target. Among the recent studies at CRIB, the measurement of 7Be+α resonant scattering is discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2014EPJWC..6607027Y},
doi = {10.1051/epjconf/20146607027},
eid = {07027}
}
@article{2015aris.confb0005I,
title = {{Quenched Spectroscopic Factors for Low-Lying Positive Parity States in $^{31}$Mg}},
author = {{Imai}, N. and {Mukai}, M. and {Cederk{"a}ll}, J. and {Aghai}, H. and {Golubev}, P. and {Johansson}, H.~T. and {Kahl}, D. and {Teranishi}, T. and {Watanabe}, Y.~X.},
journal = {The Physical Society of Japan Conference Proceedings},
year = {2015},
pages = {020005},
volume = {6},
abstract = {The excitation function of the proton resonance elastic scattering with a 30Mg beam of 2.92 MeV/nucleon was measured around 0 degrees in the laboratory frame. Three resonances corresponding to high excited states in 31Al were successfully observed. They correspond to the isobaric analog resonances of the first three bound states in 31Mg, which is considered to be located at the border of the island of inversion. An R-matrix analysis on the excitation function revealed that the spectroscopic factors for the first two positive parity resonances were quenched compared to those for other N=19 nuclei, 35S and 37Al, clearly indicating that the shell structure changes between 30Mg and 31Mg.},
adsurl = {http://adsabs.harvard.edu/abs/2015aris.confb0005I},
doi = {10.7566/JPSCP.6.020005},
eid = {020005}
}
@article{2015AIPC.1645..387S,
title = {{{$beta$}-delayed {$alpha$} decay of $^{16}$N and the $^{12}$C({$alpha$}, {$gamma$})$^{16}$O cross section at astrophysical energies: A new experimental approach}},
author = {{Sanfilippo}, S. and {Cherubini}, S. and {Hayakawa}, S. and
{Di Pietro}, A. and {Figuera}, P. and {Gulino}, M. and {La Cognata}, M. and
{Lattuada}, M. and {Spitaleri}, C. and {Yamaguchi}, H. and {Kahl}, D. and
{Nakao}, T. and {Kubono}, S. and {Wakabayashi}, Y. and {Hashimoto}, T. and
{Iwasa}, N. and {Okoda}, Y. and {Ushio}, K. and {Teranishi}, T. and
{Mazzocco}, M. and {Signorini}, C. and {Torresi}, D. and {Moon}, J.~Y. and
{Komatsubara}, T. and {Lee}, P.~S. and {Chae}, K.~Y. and {Gwak}, M.~S.
},
journal = {American Institute of Physics Conference Series},
year = {2015},
month = feb,
pages = {387-391},
volume = {1645},
abstract = {{The 1$^{2}$C ({$alpha$},{$gamma$})$^{16}$O reaction at energies
corresponding to the quiescent helium burning in massive stars is
regarded as one of the most important processes in nuclear astrophysics.
Although this process has being studied for over four decades, our
knowledge of its cross section at the energies of interest for
astrophysics is still widely unsatisfactory. Indeed, no experimental
data are available around 300 keV and in the energy region of
astrophysical interest extrapolations are performed using some
theoretical approaches, usually R-matrix calculations. Consequently, the
published astrophysical factors range from 1 to 288 keVb for
S$_{E1}$(300) and 7 to 120 keVb for S$_{E2}$(300),
especially because of the unknown contribution coming from subthreshold
resonances. To improve the reliability of these extrapolations, data
from complementary experiments, such as elastic and quasi- elastic
{$alpha$} scattering on 1$^{2}$C , {$alpha$}-transfer reactions to
1$^{6}$O , and 1$^{6}$N decay are usually included in the
analysis. Here the {$beta$}-delayed {$alpha$} decay of 1$^{6}$N is
used to infer information on the 1$^{2}$C
({$alpha$},{$gamma$})$^{16}$O reaction and a new experimental
technique is suggested.
}},
adsurl = {http://adsabs.harvard.edu/abs/2015AIPC.1645..387S},
doi = {10.1063/1.4909607},
series = {American Institute of Physics Conference Series}
}
@article{2015aris.confa0011Y,
title = {{Studies on Nuclear Astrophysics and Exotic Structure at the Low-Energy RI Beam Facility CRIB}},
author = {{Yamaguchi}, H. and {Kahl}, D. and {Hayakawa}, S. and {Sakaguchi}, Y. and {Nakao}, T. and {Wakabayashi}, Y. and {Hashimoto}, T. and {Teranishi}, T. and {Kubono}, S. and {Cherubini}, S. and {Mazzocco}, M. and {Signorini}, C. and {Gulino}, M. and {Di Pietro}, A. and {Figuera}, P. and {La Cognata}, M. and {Lattuada}, M. and {Spitaleri}, C. and {Torresi}, D. and {Lee}, P.~S. and {Lee}, C.~S. and {Komatsubara}, T. and {Iwasa}, N. and {Okoda}, Y. and {Pierroutsakou}, D. and {Parascandolo}, C. and {La Commara}, M. and {Strano}, E. and {Boiano}, C. and {Boiano}, A. and {Manea}, C. and {S{'a}nchez-Ben{'{i}}tez}, A.~M. and {Miyatake}, H. and {Watanabe}, Y.~X. and {Ishiyama}, H. and {Jeong}, S.~C. and {Imai}, N. and {Hirayama}, Y. and {Kimura}, S. and {Mukai}, M. and {Kim}, Y.~H. and {Lin}, C.~J. and {Jia}, H.~M. and {Yan}, L. and {Yang}, Y.~Y. and {Kawabata}, T. and {Kwon}, Y.~K. and {Binh}, D.~N. and {Khiem}, L.~H. and {Duy}, N.~N. },
journal = {The Physical Society of Japan Conference Proceedings},
year = {2015},
pages = {010011},
volume = {6},
abstract = {Studies on nuclear astrophysics, resonant structure, and nuclear reaction are going on at CRIB (CNS Radioactive Ion Beam separator), a low-energy RI beam separator operated by Center for Nuclear Study (CNS), the University of Tokyo. Two major methods used at CRIB to study nuclear reactions of astrophysical relevance are the resonant scattering, and direct measurements of (α,p) reactions using a thick-gas target. Several experiments for decay measurements and reaction mechanism are also performed using low-energy RI beams at CRIB. Some of the results from recent experiments at CRIB are discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2015aris.confa0011Y},
doi = {10.7566/JPSCP.6.010011},
eid = {010011}
}
Published abstracts
@article{2005APS..TSS.BA001K,
title = {{Designing a Nuclear Device as a Learning Exercise}},
author = {{Kahl}, D. and {Huibregtse}, C. and {Abbott}, S. and {Boatman}, E. and {Candea}, E. and {Johns}, S. and {Marmon}, J. and {Nance}, J. and {Stall}, E. and {Stierna}, J. and {Warmington}, L.},
journal = {APS Meeting Abstracts},
year = {2005},
month = mar,
pages = {B1},
abstract = {The goal of this project was to examine in detail the difficulties involved in designing and constructing a nuclear weapon. The research was initiated as a class project in a course on nuclear physics. The workload was divided into three primary sections: Acquisition and Enrichment of Fissile Materials; Bomb Physics; and Bomb Effects. Using only publicly available materials, we were able to successfully devise a step-by-step design for building a 20 KT uranium bomb, as well as detailing the processes for uranium refinement and the results of its detonation. Our work is relevant to the broader scientific community because it demonstrates that the major difficulty encountered in building an atomic weapon is acquiring fissile material.},
adsurl = {http://adsabs.harvard.edu/abs/2005APS..TSS.BA001K},
url = {http://meetings.aps.org/link/BAPS.2005.TSS.BA.1}
}
@article{2009APS..HAW.LG004B,
title = {{Direct Measurement of $^{21}$Na+{$alpha$} Stellar Reaction}},
author = {{Binh Dam}, N. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Hayakawa}, S. and {Hashimoto}, T. and {Kahl}, D. and {Kubono}, S. and {Le}, H.~K. and {Nguyen}, T.~T. and {Iwasa}, N. and {Kume}, N. and {Kato}, S. and {Teranishi}, T.},
journal = {APS Meeting Abstracts},
year = {2009},
month = oct,
pages = {L4},
abstract = {Nucleosynthesis of $^{22}$Na is an interesting subject because of possible {$gamma$}-ray observation and isotopic anomalies in presolar grain. $^{22}$Na would have been mainly produced in the NeNa cycle. At high temperature conditions, $^{21}$Na({$alpha$},p)$^{24}$Mg reaction could play a significant role to make flow from the NeNa cycle to the next MgAl cycle and beyond. Clearly, the $^{21}$Na({$alpha$},p)$^{24}$Mg stellar reaction would bypass $^{22}$Na, resulting in reduction of $^{22}$Na production, therefore, it is strongly coupled to the Ne-E problem. It could be also important to understand the early stage of the rp-process. Experiment was performed using a 39 MeV $^{21}$Na radioactive beam obtained by the CNS Radio Isotope Beam separator CRIB of the University of Tokyo. Both protons and alphas were measured from {$alpha$}+$^{21}$Na scattering with a thick $^{4}$He gas target.},
adsurl = {http://adsabs.harvard.edu/abs/2009APS..HAW.LG004B},
url = {http://meetings.aps.org/link/BAPS.2009.HAW.LG.4}
}
@article{2009APS..HAW.BG002H,
title = {{Study of the $^{14}$O + {$alpha$} reaction at low energy}},
author = {{Hashimoto}, T. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Dam}, N.~B. and {Kahl}, D. and {Kawabata}, T. and {Wakabayashi}, Y. and {Lee}, N.~H. and {Kim}, A. and {Han}, M.~H. and {Yoo}, J.~S. and {Hahn}, K.~I. and {Kwon}, Y.~K. and {Lee}, C.~S. and {Teranishi}, T. and {Kato}, S. and {Komatsubara}, T. and {Wang}, B.~X. and {Guo}, B. and {Bing}, G. and {Wang}, Y.~B. and {Liu}, W.~P.},
journal = {APS Meeting Abstracts},
year = {2009},
month = oct,
pages = {B2},
abstract = {The $^{14}$O($alpha$, p)$^{17}$F stellar reaction is one of the key reactions for the breakout from the Hot--CNO cycle to the rp--process. Since the cross sections depends on the product of $alpha$ and proton widths of the intermediate states in $^{18}$Ne, it is important to determine these widths. We performed an experiment of the $^{14}$O + $alpha$ scattering with a thick target method at the CNS Radioactive Ion Beam (CRIB) facility. The experiment was carried out using a thick Helium gas target and position sensitive silicon telescopes. This measurement provides an excitation function of $^{14}$O + $alpha$ scattering for an energy range of E$_{cm}$ = 1.7 -- 5.9 MeV. We will concentrate on the elastic scattering channel in this presentation, since the $alpha$-cluster structure in $^{18}$Ne above the $alpha$--threshold would play an important role for the stellar reaction. Several $alpha$--resonances were observed in the present experiment. The experimental result will be presented, and the $alpha$ cluster structure in $^{18}$Ne and the significance to the stellar reaction will be discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2009APS..HAW.BG002H},
url = {http://meetings.aps.org/link/BAPS.2009.HAW.BG.2}
}
@article{2009APS..HAW.LG006H,
title = {{Direct Measurement of the $^{11}$C($alpha$,p)$^{14}$N Reaction}},
author = {{Hayakawa}, S. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Binh}, D.~N. and {Kahl}, D. and {Wakabayashi}, Y. and {Iwasa}, N. and {Kume}, N. and {Miura}, Y. and {Teranishi}, T. and {He}, J.~J. and {Kwon}, Y.~K. and {Komatsubara}, T. and {Kato}, S. and {Wanajo}, S. },
journal = {APS Meeting Abstracts},
year = {2009},
month = oct,
pages = {L6},
abstract = {A recent simulation of the rp-process in neutrino-driven winds in type II supernovae ($nu$p-process) suggests that the $^{11}$C($alpha$,p)$^{14}$N reaction could be an important breakout pass from the pp-chain region to the CNO region. However, there are only very limited experimental information of the reaction cross section available from the time-reverse reaction studies. In order to determine the reaction rate of $^{11}$C($alpha$,p)$^{14}$N, a direct measurement by means of the thick-target inverse-kinematics method has recently been performed using low-energy $^{11}$C beams from the CNS Radioactive Ion Beam (CRIB) separator, a $^{4}$He gas target and $delta$E-E position-sensitive silicon telescopes at three downstream angles. The experiment covered E$_{CM}$ = 0.5--5 MeV corresponding to the stellar temperature of 1.5--7 GK. The obtained reaction cross section including some resonances and transitions to the excited states of $^{14}$N will be reported.},
adsurl = {http://adsabs.harvard.edu/abs/2009APS..HAW.LG006H},
url = {http://meetings.aps.org/link/BAPS.2009.HAW.LG.6}
}
@article{2009APS..HAW.KG003W,
title = {{Beta-decay measurement of $^{46}$Cr}},
author = {{Wakabayashi}, Y. and {Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Kurihara}, Y. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S. and {Nishimura}, S. and {Gono}, Y. and {Suga}, M. and {Fujita}, Y.},
journal = {APS Meeting Abstracts},
year = {2009},
month = oct,
pages = {K3},
abstract = {For the rapid proton capture process (rp-process) in X-ray bursts and the core-collapse stage of supernovae, proton-rich pf-shell nuclei far from the line of stability play important roles. Studies of the feeding ratios and half-lives of the $beta$ and electron capture decays of these proton-rich pf-shell nuclei are of great astrophysical interest not only for nucleo synthesis but also for Fermi and Gamow-Teller transition study. The experiment to measure the half life of $beta$ decay of $^{46}$Cr was performed using the low-energy RI beam separator (CRIB) of the Center for Nuclear Study (CNS), University of Tokyo. The $^{46}$Cr particles were produced by the $^{36}$Ar + $^{12}$C fusion reaction. A natural C foil of 0.56 mg/cm$^{2}$ was installed as the primary target. The $^{36}$Ar primary beam was accelerated up to 3.6 MeV/nucleon by the RIKEN AVF cyclotron. A double sided Si strip detector (DSSD) of 500-$mu$m thickness was used as a $beta$-ray detector. A Si detector of 1.5-mm thickness was placed just behind the DSSD for a $beta$-ray detector. To measure $beta$-delayed $gamma$ rays, 3 clover and 1 coaxial Ge detectors were set around the target chamber. The beam was pulsed to measure the half life of the $beta$ decay of $^{46}$Cr. The $beta$-delayed $gamma$ ray of $^{46}$Cr was observed in this experiment. The experimental result will be discussed.},
adsurl = {http://adsabs.harvard.edu/abs/2009APS..HAW.KG003W},
url = {http://meetings.aps.org/link/BAPS.2009.HAW.KG.3}
}
@article{2011APS..DNP.FG005J,
title = {{Measurement of $^{26}$Si+p resonant elastic scattering for studying the $^{26}$Si(p,{$gamma$})$^{27}$P reaction}},
author = {{Jung}, H.~S. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Lee}, J.~H. and {Yun}, C.~C. and {Lee}, C.~S. and {Choi}, S. and {Kim}, M.~J. and {Kim}, Y.~H. and {Kim}, Y.~K. and {Park}, J.~S. and {Kim}, E.~J. and {Moon}, C.~B. and {Kubono}, S. and {Yamaguchi}, H. and {Kahl}, D. and {Teranishi}, T. and {Wakabayshi}, Y. and {Iwasa}, N. and {Togano}, Y. and {Cherubini}, S.},
journal = {APS Division of Nuclear Physics Meeting Abstracts},
year = {2011},
month = oct,
pages = {F5},
abstract = {Proton resonant states in $^{27}$P have been studied by the resonant elastic scattering of $^{26}$Si+p with a $^{26}$Si radioactive ion beam at 3.039 MeV/u bombarding a thick H2 gas target with the inverse kinematics method at the low-energy RI beam facility CRIB at CNS, University of Tokyo. The properties of these resonance states are important to better determine the production rates of $^{26}$Si(p,γ)$^{27}$P reaction which is one of the atrophysically important reactions to understand the production of the ground state of $^{26}$Al under the explosive stellar environments at higher temperature. In this work, some new states have been observed with a high statistics and background free through a covered the range of excitation energies from Ex = 2.3 to 3.8 MeV. The resonant parameters of those states, were determined by an R-matrix analysis of the excitation functions.},
adsurl = {http://adsabs.harvard.edu/abs/2011APS..DNP.FG005J},
url = {http://meeting.aps.org/Meeting/DNP11/Event/150795}
}
@article{2014APS..DNP.EB006I,
title = {{Small spectroscopic factors of low-lying positive parity states in $^{31}$Mg}},
author = {{Imai}, N. and {Mukai}, M. and {Cederkall}, J. and {Aghai}, H. and {Golubev}, P. and {Johansson}, H. and {Kahl}, D. and {Kurcewics}, J. and {Teranishi}, T. and {Watanabe}, Y.},
journal = {APS Division Nuclear Physics Hawaii Meeting},
year = {2014},
month = sep,
pages = {EB.006},
abstract = {The single particle structures of even-odd nuclei around the so-called ``island of inversion'' would give us the direct evidence of such a shell evolution in this region. We measured the proton resonance elastic scattering on 30Mg re-accelerated upto 2.92 MeV/nucleon by REX-ISOLDE to study the isobarig analog resonances (IARs) of the low-lying bound states in 31Mg. The proton resonance elastic scattering is a complementary method of (d,p) reaction. We observed three resonances which can be regarded as the IARs of 31Mg. The proton widths of the first two resonances give a rise to the spectroscopic factors for the two positive parity states in 31Mg which were found to be strongly quenched compared to those for the 35S and 37Ar. Comparison with a modern shell model calculation suggests that the degrees of the ν(2p-2h) configuration in 30Mg would be less than considered. The single particle structures of even-odd nuclei around the so-called ``island of inversion'' would give us the direct evidence of such a shell evolution in this region. We measured the proton resonance elastic scattering on 30Mg re-accelerated upto 2.92 MeV/nucleon by REX-ISOLDE to study the isobarig analog resonances (IARs) of the low-lying bound states in 31Mg. The proton resonance elastic scattering is a complementary method of (d,p) reaction. We observed three resonances which can be regarded as the IARs of 31Mg. The proton widths of the first two resonances give a rise to the spectroscopic factors for the two positive parity states in 31Mg which were found to be strongly quenched compared to those for the 35S and 37Ar. Comparison with a modern shell model calculation suggests that the degrees of the ν(2p-2h) configuration in 30Mg would be less than considered.

The present work was supported by a Grant-in-Aid for Scientific Research (20244306, 23740215) by Japan Society Promotion of Science and by grants from the Swedish Research Council and the Royal Physiographical Society in Lund.},
adsurl = {http://adsabs.harvard.edu/abs/2014APS..DNP.EB006I},
booktitle = {APS Division of Nuclear Physics Meeting Abstracts}
}
Annual institutional progress reports
@article{2005.ANL.XD,
title = {A New Measurement of the E1 Component of the Low-Energy $^{12}$C($alpha$,$gamma$)$^{16}$O Cross-Section},
author = {{Tang}, X.~D. and {Rehm}, K.~E. and {Ahmad}, I. and {Brune}, C.~R. and {Champagne}, A. and {Greene}, J.~P. and {Hecht}, A.~A. and {Henderson}, D. and {Janssens}, R.~V.~F. and {Jiang}, C.~L. and {Jisonna}, L. and {Kahl}, D. and {Moore}, E.~F. and {Notani}, M. and {Pardo}, R.~C. and {Patel}, N. and {Paul}, M. and {Savard}, G. and {Schiffer}, J.~P. and {Segel}, R.~E. and {Sinha}, S. and {Shumard}, B. and {Wuosmaa}, A.~H.},
journal = {Argonne National Laboratory Physics Division Annual Report 2005},
year = {2006},
pages = {5-7},
volume = {ANL-06/53},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.phy.anl.gov/division/publications/annual_report/2005/index.html}
}
@article{2006.CNS.Jun,
title = {Study of Astrophysically Important States in $^{26}$Si through Elastic Scattering with CRIB},
author = {{Chen}, J. and {Chen}, A.~A. and {Kubono}, S. and {Yamaguchi}, H. and {Amadio}, G. and {Cherubini}, S. and {La Cognata}, M. and {Fujikawa}, H. and {Hayakawa}, S. and {Iwasa}, N. and {He}, J.~J. and {Kahl}, D. and {Khiem}, L.~H. and {Kurihara}, Y. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Niikura}, M. and {Nishimura}, S. and {Odahara}, A. and {Pearson}, J. and {Pizzone}, R. and {Saito}, A. and {Signorini}, C. and {Teranishi}, T. and {Togano}, Y. and {Wakabayashi}, Y.},
journal = {Center for Nuclear Study Annual Report 2006},
year = {2007},
pages = {3-4},
volume = {CNS-REP-76},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann06.pdf}
}
@article{2007.CNS.daid,
title = {On the Waiting Point at A=30 in X-ray Bursts: $^{30}$S($alpha$,p)$^{33}$Cl with CRIB},
author = {{Kahl}, D. and {Chen}, A.~A. and {Chen}, J. and {Hayakawa}, S. and {Kim}, A. and {Kubono}, S. and {Michimasa}, S. and {Setoodehnia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {Center for Nuclear Study Annual Report 2006},
year = {2007},
pages = {1-2},
volume = {CNS-REP-76},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann06.pdf}
}
@article{2006.ANL.XD,
title = {A New Measurement of the E1 Component of the $^{12}$C($alpha$,$gamma$)$^{16}$O Cross-Section at Low Energies},
author = {{Tang}, X.~D. and {Rehm}, K.~E. and {Ahmad}, I. and {Brune}, C.~R. and {Champagne}, A. and {Greene}, J.~P. and {Hecht}, A.~A. and {Henderson}, D. and {Janssens}, R.~V.~F. and {Jiang}, C.~L. and {Jisonna}, L. and {Kahl}, D. and {Moore}, E.~F. and {Notani}, M. and {Pardo}, R.~C. and {Patel}, N. and {Paul}, M. and {Savard}, G. and {Schiffer}, J.~P. and {Segel}, R.~E. and {Sinha}, S. and {Shumard}, B. and {Wuosmaa}, A.~H.},
journal = {Argonne National Laboratory Physics Division Annual Report 2006},
year = {2007},
pages = {4-7},
volume = {ANL-07/29},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.phy.anl.gov/division/publications/annual_report/index.html}
}
@article{2007.CNS.Jun,
title = {Study of Astrophysically Important States in $^{26}$Si through Elastic Scattering with CRIB},
author = {{Chen}, J. and {Chen}, A.~A. and {Kubono}, S. and {Yamaguchi}, H. and {Amadio}, G. and {Cherubini}, S. and {La Cognata}, M. and {Fujikawa}, H. and {Hayakawa}, S. and {Iwasa}, N. and {He}, J.~J. and {Kahl}, D. and {Khiem}, L.~H. and {Kurihara}, Y. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Niikura}, M. and {Nishimura}, S. and {Odahara}, A. and {Pearson}, J. and {Pizzone}, R. and {Saito}, A. and {Signorini}, C. and {Teranishi}, T. and {Togano}, Y. and {Wakabayashi}, Y.},
journal = {Center for Nuclear Study Annual Report 2007},
year = {2009},
pages = {3-4},
volume = {CNS-REP-80},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann07.pdf}
}
@article{2008.RAPR.Jun,
title = {Study of astrophysically important states in $^{26}$Si via the p($^{25}$Al, p)$^{25}$Al elastic scattering},
author = {{Chen}, J. and {Chen}, A.~A. and {Kubono}, S. and {Yamaguchi}, H. and {Amadio}, G. and {Cherubini}, S. and {La Cognata}, M. and {Fujikawa}, H. and {Hayakawa}, S. and {Iwasa}, N. and {He}, J.~J. and {Kahl}, D. and {Khiem}, L.~H. and {Kurihara}, Y. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Niikura}, M. and {Nishimura}, S. and {Odahara}, A. and {Pearson}, J. and {Pizzone}, R. and {Saito}, A. and {Signorini}, C. and {Teranishi}, T. and {Togano}, Y. and {Wakabayashi}, Y.},
journal = {RIKEN Accelerator Progress Report 2008},
year = {2009},
pages = {21},
volume = {42},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2008.pdf}
}
@article{CNS.2007.daid,
title = {$^{30}$S Beam Production with CRIB: Analysis of 2006 Data and Preliminary Experimental Results from 2008},
author = {{Kahl}, D and {Chen}, A.~A. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Kubono}, S. and {Kurihara}, Y. and {Lee}, N.~H. and {Michimasa}, S. and {Nishimura}, S. and {Ouellet}, C.~V. and {Setoodehnia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {Center for Nuclear Study Annual Report 2007},
year = {2009},
pages = {9-10},
volume = {CNS-REP-80},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann07.pdf}
}
@article{2008.RAPR.daid,
title = {$^{30}$S Beam Development with CRIB},
author = {{Kahl}, D. and {Chen}, A.~A. and {Dam}, N.~B. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Kim}, A. and {Kubono}, S. and {Kurihara}, Y. and {Lee}, N.~H. and {Michimasa}, S. and {Nishimura}, S. and {Ouellet}, C.~V. and {Setodeh nia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {RIKEN Accelerator Progress Report 2008},
year = {2009},
pages = {20},
volume = {42},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2008.pdf}
}
@article{2008.UTTAC.Komatsubara,
title = {Study of nuclear synthesis of $^{26}$Al by gamma ray spectroscopy II},
author = {{Komatsubara}, T. and {Ozawa}, A. and {Hara}, K. and {Moriguchi}, T. and {Ito}, Y. and {Satake}, H.and {Ooishi}, H. and {Itabashi}, Y. and {Shizuma}, T. and {Hayakawa}, T. and {Kubono}, S. and {Binh}, D.~N. and {Kahl}, D. and {Chen}, A. and {Chen}, J.},
journal = {University of Tsukuba Tandem Accelerator Complex Annual Report 2008},
year = {2009},
pages = {13-14},
volume = {UTTAC-78},
owner = {daid},
timestamp = {2011.02.02},
url = {http://web2.tac.tsukuba.ac.jp/uttac/files/UTTAC-AnnualReport2008.pdf}
}
@article{2008.RAPR.Bayashi,
title = {Half life measurement of $^{46}$Cr},
author = {{Wakabayashi}, Y. and {Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, H. and {Kurihara}, Y. and {Nishimura}, S. and {Binh}, D.~N. and {Kahl}, D. and {Suga}, M. and {Gono}, Y. and {Fujita}, Y. and {Kubono}, S.},
journal = {RIKEN Accelerator Progress Report 2008},
year = {2009},
pages = {19},
volume = {42},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2008.pdf}
}
@article{2008.CNS.Binh,
title = {Alpha Resonant Scattering Measurement Using a $^{21}$Na Radioactive Beam},
author = {{Binh}, D.~N. and {Khiem}, L.~H. and {Tho}, N.~T. and {Kubono}, S. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Hayakawa}, S. and {Kahl}, D. and {Hashimoto}, T. and {Teranishi}, T. and {Kato}, S. and {Iwasa}, N. and {Kume}, N.},
journal = {Center for Nuclear Study Annual Report 2008},
year = {2010},
pages = {19-20},
volume = {CNS-REP-83},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann08.pdf}
}
@article{2008.CNS.Jun,
title = {Update: study of astrophysically important states in $^{26}$Si using the $^{25}$Al+p elastic scattering with CRIB},
author = {{Chen}, J. and {Chen}, A.~A. and {Kubono}, S. and {Yamaguchi}, H. and {Amadio}, G. and {Cherubini}, S. and {La Cognata}, M. and {Fujikawa}, H. and {Hayakawa}, S. and {Iwasa}, N. and {He}, J.~J. and {Kahl}, D. and {Khiem}, L.~H. and {Kurihara}, Y. and {Kwon}, Y.~K. and {Moon}, J.~Y. and {Niikura}, M. and {Nishimura}, S. and {Odahara}, A. and {Pearson}, J. and {Pizzone}, R. and {Saito}, A. and {Signorini}, C. and {Teranishi}, T. and {Togano}, Y. and {Wakabayashi}, Y.},
journal = {Center for Nuclear Study Annual Report 2008},
year = {2010},
pages = {21-22},
volume = {CNS-REP-83},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann08.pdf}
}
@article{2008.CNS.Seiya,
title = {Practical Designing of the Direct Measurement of the Astrophysical Reaction $^{11}$C($alpha$,p)$^{14}$N},
author = {{Hayakawa}, S. and {Kubono}, S. and {Hashimoto}, T. and {Yamaguchi}, H. and {Binh}, D.~N. and {Kahl}, D.~M. and {Wakabayashi}, Y. and {Iwasa}, N. and {Kume}, N. and {Miura}, I. and {Teranishi}, T. and {He}, J.~J. and {Kwon}, Y.~K. and {Komatsubara}, T. and {Kato}, S. and {Wanajo}, S.},
journal = {Center for Nuclear Study Annual Report 2008},
year = {2010},
pages = {9-10},
volume = {CNS-REP-83},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann08.pdf}
}
@article{2009.RAPR.daid,
title = {Progress in $^{30}$S Beam Development for a Measurement of $^{4}$He($^{30}$S,,p)},
author = {{Kahl}, D. and {Chen}, A.~A. and {Kubono}, S. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Kaji}, D. and {Kim}, A. and {Kurihara}, Y. and {Lee}, N.~H. and {Michimasa}, S. and {Nishimura}, S. and {Ohshiro}, Y. and {Setodeh nia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {RIKEN Accelerator Progress Report 2009},
year = {2010},
pages = {30},
volume = {43},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2009.pdf}
}
@article{2008.CNS.Namee,
title = {Study of the $^{14}$N($alpha$, $alpha$)$^{14}$N, $^{14}$N($alpha$,p)$^{17}$O, and $^{14}$N($alpha$,d)$^{16}$O reactions using a $^{14}$N beam in the inverse kinematics for astrophysics experiments},
author = {{Lee}, N.~H. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Kawabata}, T. and {Wakabayashi}, Y. and {Hayakawa}, S. and {Kurihara}, Y. and {Dam}, Nugyen Binh and {Kahl}, D.~M. and {Ternanishi}, T. and {Kato}, S. and {Komatsubara}, T. and {Han}, M.~H. and {Kim}, A. and {Yoo}, J.~S. and {Hahn}, K.~I. and {Kwon}, Y.~W. and {Guo}, B. and {Wang}, B. X. and {Wang}, Y. B.},
journal = {Center for Nuclear Study Annual Report 2008},
year = {2010},
pages = {11-12},
volume = {CNS-REP-83},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann08.pdf}
}
@article{2009.UTTAC.Kiana,
title = {Study of the structure of $^{30}$S by in-beam gamma ray sprectroscopy and the $^{29}$P(p,$gamma$)$^{30}$S reaction rate in classical novae},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Komatsubara}, T. and {Sugiyama}, Y. and {Ozawa}, A. and {Moriguchi}, T. and {Ito}, Y. and {Ooishi}, H. and {Ishibashi}, Y. and {Hayakawa}, T. and {Shizuma}, T. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Kahl}, D. and {Binh}, D.~N.},
journal = {University of Tsukuba Tandem Accelerator Complex Annual Report 2009},
year = {2010},
pages = {9-10},
volume = {UTTAC-79},
numpages = {2},
url = {http://web2.tac.tsukuba.ac.jp/uttac/files/UTTAC-AnnualReport2009.pdf}
}
@article{2008.CNS.Bayashi,
title = {Beta-decay half life of $^{46}$Cr},
author = {{Wakabayashi}, Y. and {Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Kurihara}, Y. and {Binh}, D.~N. and {Kahl}, D. and {Nishimura}, S. and {Gono}, Y. and {Suga}, M. and {Fujita}, Y. and {Kubono}, S.},
journal = {Center for Nuclear Study Annual Report 2008},
year = {2010},
pages = {25-26},
volume = {CNS-REP-83},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann08.pdf}
}
@article{2009.RAPR.yamag,
title = {New measurement of resonance scattering of alpha particles on $^{7}$Li},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Binh}, D.~N. and {Kahl}, D. and {Hayakawa}, S. and {Wakabayashi}, Y. and {Kawabata}, T. and {Teranishi}, T.},
journal = {RIKEN Accelerator Progress Report 2009},
year = {2010},
pages = {31},
volume = {43},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2009.pdf}
}
@article{2008.CNS.Yamaguchi,
title = {New measurement of alpha resonance scattering on $^{7}$Li},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S. and {Wakabayashi}, Y. and {Kawabata}, T. and {Teranishi}, T.},
journal = {Center for Nuclear Study Annual Report 2008},
year = {2010},
pages = {5-6},
volume = {CNS-REP-83},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann08.pdf}
}
@article{2009.CNS.Binh,
title = {Multichannel R-matrix analysis for an alpha scattering in inverse kinematics using a $^{21}$Na radioisotope beam},
author = {{Binh}, D.~N. and {Khiem}, L.~H. and {Tho}, N.~T. and {Kubono}, S. and {Yamaguchi}, H. and {Wakabayashi}, Y. and {Hayakawa}, S. and {Kahl}, D. and {Hashimoto}, T. and {Teranishi}, T. and {Kato}, S. and {Iwasa}, N.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {5-6},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Hashimoto,
title = {Present status of the direct measurement of the $^{18}$Ne($alpha$,,p) reaction cross section using the GEM-MSTPC},
author = {{Hashimoto}, T. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Kahl}, D. and {Ota}, S. and {Michimasa}, S. and {Tokieda}, H. and {Yamaguchi}, K. and {Arai}, I. and {Komatsubara}, T. and {Ishiyama}, H. and {Watanabe}, Y.~X. and {Miyatake}, H. and {Hirayama}, Y. and {Imai}, N. and {Jeong}, S.~C. and {Mizoi}, Y. and {Das}, S.~K. and {Fukuda}, T. and {Makii}, H. and {Wakabayashi}, Y. and {Iwasa}, N. and {Yamada}, T. and {Chen}, A.~A. and {He}, J.~J.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {9-10},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Seiya,
title = {First direct measurement of the $^{11}$C($alpha$,p)$^{14}$N stellar reaction},
author = {{Hayakawa}, S. and {Kubono}, S. and {Hashimoto}, T. and {Yamaguchi}, H. and {Binh}, D.~N. and {Kahl}, D. and {Wakabayashi}, Y. and {Iwasa}, N. and {Kume}, N. and {Miura}, I. and {Teranishi}, T. and {He}, J.~J. and {Kwon}, Y.~K. and {Komatsubara}, T. and {Kato}, S. and {Wanajo}, S.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {7-8},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2010.RAPR.imai,
title = {Proton resonance elastic scattering of $^{34}$Si},
author = {{Imai}, N. and {Hirayama}, Y. and {Watanabe}, Y.~X. and {Teranishi}, T. and {Hashimoto}, T. and {Hayakawa}, S. and {Ichikawa}, Y. and {Jeong}, S.~C. and {Kahl}, D. and {Kubono}, S. and {Miyatake}, H. and {Ueno}, H. and {Yamaguchi}, H. and {Yoneda}, K. and {Yoshimi}, A. },
journal = {RIKEN Accelerator Progress Report 2010},
year = {2011},
pages = {4},
volume = {44},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2010.pdf}
}
@article{CNS.2009.daid,
title = {$^{30}$S Beam Production and RI Beam Modeling at CRIB},
author = {{Kahl}, D and {Chen}, A.~A. and {Kubono}, S. and {Binh}, D.~N. and {Chen}, J. and {Hashimoto}, T. and {Hayakawa}, S. and {Iwasa}, N. and {Kaji}, D. and {Kim}, A. and {Kurihara}, Y. and {Lee}, N.~H. and {Mazzocco}, M. and {Nishimura}, S. and {Ohshiro}, Y. and {Setoodehnia}, K. and {Wakabayashi}, Y. and {Yamaguchi}, H.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {11-12},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Guo,
title = {Indirect measurement of astrophysical $^{12}$N(p,,$gamma$)$^{13}$O reaction rate},
author = {{Liu}, W.~P. and {Guo}, B. and {Su}, J. and {Li}, Z.~H. and {Binh}, D.~N. and {Han}, Y.~L. and {Hashimoto}, T. and {Hayakawa}, S. and {He}, J.~J. and {Hu}, J. and {Iwasa}, N. and {Kahl}, D.~M. and {Kubono}, S. and {Kume}, N. and {Li}, Y.~J. and {Li}, Z.~H. and {Wang}, Y.~B. and {Xu}, S.~W. and {Yamaguchi}, H. and {Yan}, S.~Q. and {Bai}, X.~X. and {Lian}, G. and {Wang}, B.~X. and {Zeng}, S.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {15-16},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Ota,
title = {New Intergroup Collaboration for Development of GEM-TPC Active Target},
author = {{Ota}, S. and {Michimasa}, S. and {Gunji}, T. and {Yamaguchi}, H. and {Akimoto}, R. and {Hashimoto}, T. and {Kahl}, D. and {Hayakawa}, S. and {Tokieda}, H. and {Kawase}, S. and {Tsuji}, T. and {Kubono}, S. and {Hamagaki}, H and {Uesaka}, T.
},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {57-58},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Teranishi,
title = {Test measurement of $^{17}$Ne+p resonance elastic scattering},
author = {{Teranishi}, T. and {Kubono}, S. and {Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Kurihara}, Y. and {Binh}, D.~N. and {Kahl}, D. and {Wakabayashi}, Y. and {Khiem}, L.~H. and {Cuong}, P.~V. and {Watanabe}, S. and {Goto}, A.
},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {17-18},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2010.RAPR.toki,
title = {Performance of Gas Electron Multiplier with Deuteron Gas},
author = {{Tokieda}, H. and {Ota}, S. and {Hashimoto}, T. and {Michimasa}, S. and {Dozono}, M. and {Matubara}, H. and {Kikuchi}, Y. and {Gunji}, T. and {Yamaguchi}, H. and {Kahl}, D.~M. and {Akimoto}, R. and {Hamagaki}, H. and {Kubono}, S. and {Uesaka}, T.
},
journal = {RIKEN Accelerator Progress Report 2010},
year = {2011},
pages = {192},
volume = {44},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.nishina.riken.jp/researcher/APR/Document/2010.pdf}
}
@article{2009.CNS.Bayashi,
title = {Beta-decay measurement of $^{46}$Cr},
author = {{Wakabayashi}, Y. and {Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Kurihara}, Y. and {Binh}, D.~N. and {Kahl}, D. and {Nishimura}, S. and {Gono}, Y. and {Fujita}, Y. and {Kubono}, S.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {13-15},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Yamaguchi,
title = {Measurement of alpha resonance scattering on $^{7}$Be},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S. and {Kawabata}, T. and {Wakabayashi}, Y. and {Iwasa}, N. and {Miura}, Y. and {Kwon}, Y.~K. and {Khiem}, L.~H. and {Duy}, N.~N. and {Teranishi}, T.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {1-2},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2009.CNS.Yamaguchi2,
title = {R-matrix analysis on the excitation function of $^{7}$Li+$alpha$ elastic scattering},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S. and {Wakabayashi}, Y. and {Kawabata}, T. and {Teranishi}, T.},
journal = {Center for Nuclear Study Annual Report 2009},
year = {2011},
pages = {3-4},
volume = {CNS-REP-86},
owner = {daid},
timestamp = {2011.02.02},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann09.pdf}
}
@article{2010.CNS.Hashimoto,
title = {Present status of the direct measurement of the $^{18}$Ne($alpha$,,p) reaction cross section using the GEM-MSTPC},
author = {{Hashimoto}, T. and {Kubono}, S. and {Yamaguchi}, H. and {Hayakawa}, S. and {Kahl}, D. and {Ota}, S. and {Michimasa}, S. and {Tokieda}, H. and {Yamaguchi}, K. and {Arai}, I. and {Komatsubara}, T. and {Ishiyama}, H. and {Watanabe}, Y.~X. and {Miyatake}, H. and {Hirayama}, Y. and {Imai}, N. and {Jeong}, S.~C. and {Mizoi}, Y. and {Das}, S.~K. and {Fukuda}, T. and {Makii}, H. and {Wakabayashi}, Y. and {Iwasa}, N. and {Yamada}, T. and {Chen}, A.~A. and {He}, J.~J.},
journal = {Center for Nuclear Study Annual Report 2010},
year = {2012},
pages = {3-4},
volume = {CNS-REP-88},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann10.pdf}
}
@article{2010.CNS.Ota,
title = {CNS Active Target Development and Test Experiment at HIMAC},
author = {{Ota}, S. and {Michimasa}, S. and {Gunji}, T. and {Yamaguchi}, H. and {Tokieda}, H. and {Hashimoto}, T. and {Akimoto}, R. and {Kahl}, D. and {Dozono}, M. and {Hayakawa}, S. and {Kawase}, S. and {Kikuchi}, Y. and {Maeda}, Y. and {Matsubara}, H. and {Otsu}, H. and {Kubono}, S. and {Hamagaki}, H and {Uesaka}, T. },
journal = {Center for Nuclear Study Annual Report 2010},
year = {2012},
pages = {46-47},
volume = {CNS-REP-88},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann10.pdf}
}
@article{2010.UTTAC.Kiana,
title = {Study of the structure of $^{30}$S by in-beam gamma ray sprectroscopy and the $^{29}$P(p,$gamma$)$^{30}$S reaction rate in classical novae phase II},
author = {{Setoodehnia}, K. and {Chen}, A.~A. and {Komatsubara}, T. and {Abe}, Y. and {Chen}, J. and {Cherubini}, S. and {Fukuoka}, S. and {Ishibashi}, Y. and {Ito}, Y. and {Kubono}, S. and {Kahl}, D. and {Moriguchi}, T. and {Okumura}, K. and {Ooishi}, H. and {Ozawa}, A. and {Nakamura}, S. and {Nagae}, D. and {Nishikiori}, R. and {Niwa}, T. and {Suzuki}, H. and {Yokoyama}, K. and {Yuasa}, T.},
journal = {University of Tsukuba Tandem Accelerator Complex Annual Report 2010},
year = {2012},
pages = {9-10},
volume = {UTTAC-80},
numpages = {2},
url = {http://web2.tac.tsukuba.ac.jp/uttac/files/UTTAC-AnnualReport2010.pdf}
}
@article{2010.CNS.toki,
title = {Performance of Gas Electron Multiplier with Deuteron Gas},
author = {{Tokieda}, H. and {Ota}, S. and {Hashimoto}, T. and {Michimasa}, S. and {Dozono}, M. and {Matubara}, H. and {Kikuchi}, Y. and {Gunji}, T. and {Yamaguchi}, H. and {Kahl}, D.~M. and {Akimoto}, R. and {Hamagaki}, H. and {Kubono}, S. and {Uesaka}, T.
},
journal = {Center for Nuclear Study Annual Report 2010},
year = {2012},
pages = {48-49},
volume = {CNS-REP-88},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann10.pdf}
}
@article{2010.CNS.Yamaguchi,
title = {Excitation functions of $^{7}$Be+$alpha$ elastic and inelastic scattering cross sections},
author = {{Yamaguchi}, H. and {Hashimoto}, T. and {Hayakawa}, S. and {Binh}, D.~N. and {Kahl}, D. and {Kubono}, S. and {Kawabata}, T. and {Teranishi}, T. and {Wakabayashi}, Y. and {Iwasa}, N. and {Miura}, Y. and {Kwon}, Y.~K. and {Khiem}, L.~H. and {Duy}, N.~N.},
journal = {Center for Nuclear Study Annual Report 2010},
year = {2012},
pages = {1-2},
volume = {CNS-REP-88},
owner = {daid},
timestamp = {2012.04.17},
url = {http://www.cns.s.u-tokyo.ac.jp/archive/annual/ann10.pdf}
}

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