NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = A.Chen Found 101 matches. Showing 1 to 100. [Next]2024PA09 Phys.Rev. C 109, 015802 (2024) S.N.Paneru, C.R.Brune, D.Connolly, D.Odell, M.Poudel, D.R.Phillips, J.Karpesky, B.Davids, C.Ruiz, A.Lennarz, U.Greife, M.Alcorta, R.Giri, M.Lovely, M.Bowry, M.Delgado, N.E.Esker, A.B.Garnsworthy, C.Seeman, P.Machule, J.Fallis, A.A.Chen, F.Laddaran, A.Firmino, C.Weinerman Elastic scattering of 3He+4He with the SONIK scattering chamber
doi: 10.1103/PhysRevC.109.015802
2023DI06 Eur.Phys.J. A 59, 105 (2023) I.Dillmann, O.Kester, R.Baartman, A.Chen, T.Junginger, F.Herwig, D.Kaltchev, A.Lennarz, T.Planche, C.Ruiz, N.Vassh Measuring neutron capture cross sections of radioactive nuclei
doi: 10.1140/epja/s10050-023-01012-9
2023QI02 Phys.Rev. A 107, L010802 (2023) X.-Q.Qi, P.-P.Zhang, Z.-C.Yan, T.-Y.Shi, G.W.F.Drake, A.-X.Chen, Z.-X.Zhong Theoretical hyperfine splittings of 7, 9Be2+ ions for future studies of nuclear properties ATOMIC PHYSICS 7,9Be; calculated hyperfine structures and splittings within the framework of the nonrelativistic quantum electrodynamics, including relativistic and radiative corrections. Comparison with available data.
doi: 10.1103/PhysRevA.107.L010802
2022BU14 Phys.Rev.Lett. 128, 182701 (2022) T.Budner, M.Friedman, C.Wrede, B.A.Brown, J.Jose, D.Perez-Loureiro, L.J.Sun, J.Surbrook, Y.Ayyad, D.W.Bardayan, K.Chae, A.A.Chen, K.A.Chipps, M.Cortesi, B.Glassman, M.R.Hall, M.Janasik, J.Liang, P.O'Malley, E.Pollacco, A.Psaltis, J.Stomps, T.Wheeler Constraining the 30P(p, γ)31S Reaction Rate in ONe Novae via the Weak, Low-Energy, β-Delayed Proton Decay of 31Cl RADIOACTIVITY 31Cl(β+p) [from 9Be(36Ar, X), E=150 MeV/nucleon]; measured decay products, Eβ, Iβ, Ep, Ip; deduced β-delayed proton spectra, the weakest β-delayed proton intensity ever measured, resonance parameters, astrophysical reaction rates. The Gaseous Detector with Germanium Tagging (GADGET), the Coupled Cyclotron Facility at MSU.
doi: 10.1103/PhysRevLett.128.182701
2022LO01 Phys.Rev.Lett. 128, 042701 (2022) G.Lotay, A.Lennarz, C.Ruiz, C.Akers, A.A.Chen, G.Christian, D.Connolly, B.Davids, T.Davinson, J.Fallis, D.A.Hutcheon, P.Machule, L.Martin, D.J.Mountford, A.St.J.Murphy Radiative Capture on Nuclear Isomers: Direct Measurement of the 26mAl(p, γ)27Si Reaction NUCLEAR REACTIONS 1H(26Al, γ), E=390 keV/nucleon; measured reaction products, Eγ, Iγ; deduced resonance energies and parameters, astrophysical reaction rates. Comparison with available data.
doi: 10.1103/PhysRevLett.128.042701
2022PS02 Phys.Rev.Lett. 129, 162701 (2022) A.Psaltis, A.A.Chen, R.Longland, D.S.Connolly, C.R.Brune, B.Davids, J.Fallis, R.Giri, U.Greife, D.A.Hutcheon, L.Kroll, A.Lennarz, J.Liang, M.Lovely, M.Luo, C.Marshall, S.N.Paneru, A.Parikh, C.Ruiz, A.C.Shotter, M.Williams Direct Measurement of Resonances in 7Be(α, γ)11C Relevant to νp-Process Nucleosynthesis NUCLEAR REACTIONS 4He(7Be, γ)11C, E not given; measured reaction products, Eγ, Iγ; deduced resonance energies and strengths, thermonuclear reaction rates. Comparison with available data. DRAGON recoil separator, TRIUMF.
doi: 10.1103/PhysRevLett.129.162701
2022PS03 Phys.Rev. C 106, 045805 (2022) A.Psaltis, A.A.Chen, R.Longland, D.S.Connolly, C.R.Brune, B.Davids, J.Fallis, R.Giri, U.Greife, D.A.Hutcheon, L.Kroll, A.Lennarz, J.Liang, M.Lovely, M.Luo, C.Marshall, S.N.Paneru, A.Parikh, C.Ruiz, A.C.Shotter, M.Williams First inverse kinematics measurement of resonances in 7Be(α, γ)11C relevant to neutrino-driven wind nucleosynthesis using DRAGON NUCLEAR REACTIONS 4He(7Be, γ), E=351-464 keV/nucleon; measured reaction products, Eγ, Iγ, γ-sum, (particle)γ-coin; deduced 1110-, 1115- and 876-keV resonances strength, thermonuclear reaction rate (T=0.1-10 GK), astrophysical S-factor. Discussed the impact of newly determined rates on studies of nucleosynthesis in neutrino-driven winds. Helium-filled windowless gas target surrounded by γ-ray array of 30 BGO scintillator crystals at DRAGON recoil separator (TRIUMF).
doi: 10.1103/PhysRevC.106.045805
2021DO09 Nature(London) 590, 561 (2021), Pub.Correction Nature(London) 604, E26 (2022) J.Dove, B.Kerns, R.E.McClellan, S.Miyasaka, D.H.Morton, K.Nagai, S.Prasad, F.Sanftl, M.B.C.Scott, A.S.Tadepalli, C.A.Aidala, J.Arrington, C.Ayuso, C.L.Barker, C.N.Brown, W.C.Chang, A.Chen, D.C.Christian, B.P.Dannowitz, M.Daugherity, M.Diefenthaler, L.El Fassi, D.F.Geesaman, R.Gilman, Y.Goto, L.Guo, R.Guo, T.J.Hague, R.J.Holt, D.Isenhower, E.R.Kinney, N.Kitts, A.Klein, D.W.Kleinjan, Y.Kudo, C.Leung, P.-J.Lin, K.Liu, M.X.Liu, W.Lorenzon, N.C.R.Makins, M.Mesquita de Medeiros, P.L.McGaughey, Y.Miyachi, I.Mooney, K.Nakahara, K.Nakano, S.Nara, J.-C.Peng, A.J.Puckett, B.J.Ramson, P.E.Reimer, J.G.Rubin, S.Sawada, T.Sawada, T.-A.Shibata, D.Su, M.Teo, B.G.Tice, R.S.Towell, S.Uemura, S.Watson, S.G.Wang, A.B.Wickes, J.Wu, Z.Xi, Z.Ye The asymmetry of antimatter in the proton NUCLEAR REACTIONS 1,2H(p, μ+), (p, μ-), E=120 GeV; measured reaction products. 1H; deduced antimatter asymmetry in the proton.
doi: 10.1038/s41586-021-03282-z
2021LO09 Phys.Rev. C 103, 055801 (2021) M.Lovely, A.Lennarz, D.Connolly, M.Williams, M.Alcorta, A.A.Chen, B.Davids, N.E.Esker, C.Fry, S.A.Gillespie, R.Giri, U.Greife, A.Hussein, D.Hutcheon, J.Karpesky, L.Kroll, J.Liang, P.D.O'Malley, S.Paneru, A.Psaltis, C.Ruiz, A.C.Shotter, for the DRAGON Collaboration Proton capture on 34S in the astrophysical energy regime of O-Ne novae NUCLEAR REACTIONS 1H(34S, γ)35Cl, E=518.6 keV/nucleon from the ISAC facility of TRIUMF; measured recoils, Eγ, Iγ, TOF using DRAGON separator having four components, windowless gas target, BGO array for γ rays, two stage electromagnetic separator, and heavy ion detector system of double-sided silicon strip detector (DSSSD) and an ionization chamber (IC) for recoils. 35Cl; deduced energies of resonances, resonance strengths, astrophysical reaction rates. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.103.055801
2021PS01 Nucl.Instrum.Methods Phys.Res. A987, 164828 (2021) A.Psaltis, A.A.Chen, D.S.Connolly, B.Davids, G.Gilardy, R.Giri, U.Greife, W.Huang, D.A.Hutcheon, J.Karpesky, A.Lennarz, J.Liang, M.Lovely, S.N.Paneru, C.Ruiz, G.Tenkila, M.Williams Beyond the acceptance limit of DRAGON: The case of the 6Li(α, γ)10B reaction NUCLEAR REACTIONS 6Li(α, γ), E=3.6 MeV; measured reaction products, TOF, Eγ, Iγ; deduced Q-value, resonance parameters. Comparison with available data.
doi: 10.1016/j.nima.2020.164828
2021RA22 Phys.Rev. C 104, L042801 (2021) J.S.Randhawa, R.Kanungo, J.Refsgaard, P.Mohr, T.Ahn, M.Alcorta, C.Andreoiu, S.S.Bhattacharjee, B.Davids, G.Christian, A.A.Chen, R.Coleman, P.E.Garrett, G.F.Grinyer, E.G.Fuakye, G.Hackman, J.Hollett, R.Jain, K.Kapoor, R.Krucken, A.Laffoley, A.Lennarz, J.Liang, Z.Meisel, B.Nikhil, A.Psaltis, A.Radich, M.Rocchini, N.Saei, M.Saxena, M.Singh, C.Svensson, P.Subramaniam, A.Talebitaher, S.Upadhyayula, C.Waterfield, J.Williams, M.Williams First direct measurement of 59Cu(p, α)56Ni: step towards constraining the Ni-Cu cycle in the cosmos NUCLEAR REACTIONS 1H(59Cu, α)56Ni, E=8.5 MeV/nucleon, [secondary 59Cu beam from Nb(p, X), E=480 MeV at the TRIUMF cyclotron, followed by re-acceleration of 59Cu beam by ISAC-II superconducting LINAC, solid H2 target]; measured protons and α particles, angle-integrated σ using thick single-sided silicon strip detectors and a layer of thick CsI(Tl) detectors; deduced ratio of integrated σ to total σ, exclusive population of the ground state of 56Ni in (p, α). Comparison with Hauser-Feshbach based statistical model calculations; deduced overestimation of (p, α) cross section in this region. Discussed impact on νp process and x-ray bursts (XRBs). Relevance to Ni-Cu cycle in nucleosynthesis, with competing 59Cu(p, α)56Ni and 59Cu(p, γ)60Zn reactions.
doi: 10.1103/PhysRevC.104.L042801
2020KR03 At.Data Nucl.Data Tables 133-134, 101336 (2020) Compilation of recent atomic mass measurements and deduced quantities COMPILATION Z=5-102; compiled atomic mass measurements; deduced β- and α-decay Q-values, one- and two-nucleon separation energies using the newly measured mass excesses.
doi: 10.1016/j.adt.2020.101336
2020LE11 Phys.Lett. B 807, 135539 (2020) A.Lennarz, M.Williams, A.M.Laird, U.Battino, A.A.Chen, D.Connolly, B.Davids, N.Esker, R.Garg, M.Gay, U.Greife, U.Hager, D.Hutcheon, J.Jose, M.Lovely, S.Lyons, A.Psaltis, J.E.Riley, A.Tattersall, C.Ruiz First inverse kinematics measurement of key resonances in the 22Ne(p, γ)23Na reaction at stellar temperatures NUCLEAR REACTIONS 1H(22Ne, γ)23Na, E not given; measured reaction products; deduced resonance strengths, reaction rates.
doi: 10.1016/j.physletb.2020.135539
2020LI32 Nucl.Data Sheets 168, 1 (2020) J.Liang, B.Singh, E.A.McCutchan, I.Dillmann, M.Birch, A.A.Sonzogni, X.Huang, M.Kang, J.Wang, G.Mukherjee, K.Banerjee, D.Abriola, A.Algora, A.A.Chen, T.D.Johnson, K.Miernik Compilation and Evaluation of Beta-Delayed Neutron Emission Probabilities and Half-Lives for Z > 28 Precursors RADIOACTIVITY 73,74,75,76,77,78,79,80,81,82,83Cu, 78,79,80,81,82,83,84,85Zn, 79,80,81,82,83,84,85,86,87Ga, 83,84,85,86,87,88,89,90Ge, 84,85,86,87,88,89,90,91,92As, 86,87,88,89,90,91,92,93,94,95Se, 87,88,89,90,91,92,93,94,95,96,97,98Br, 91,92,93,94,95,96,97,98,99,100,101Kr, 91,92,93,94,95,96,97,98,99,100,101,102,103,104Rb, 96,97,98,99,100,101,102,103,104,105,106,107Sr, 97,98,99,100,101,102,103,104,105,106,107,108,109Y, 103,104,105,106,107,108,109,110,111,112,113Zr, 103,104,105,106,107,108,109,110,111,112,113,114,115,116Nb, 109,110,111,112,113,114,115,116,117,118,119Mo, 109,110,111,112,113,114,115,116,117,118,119,120,121,122Tc, 114,115,116,117,118,119,120,121,122,123,124,125Ru, 115,116,117,118,119,120,121,122,123,124,125,126,127,128Rh, 119,120,121,122,123,124,125,126,127,128,129,130,131Pd, 120,121,122,123,124,125,126,127,128,129,130,131,132Ag, 126,127,128,129,130,131,132,133,134Cd, 127,128,129,130,131,132,133,134,135,136,137In, 133,134,135,136,137,138,139,140Sn, 134,135,136,137,138,139,140,141,142Sb, 136,137,138,139,140,141,142,143,144,145Te, 137,138,139,140,141,142,143,144,145,146,147I, 141,142,143,144,145,146,147,148,149,150Xe, 141,142,143,144,145,146,147,148,149,150,151,152Cs, 147,148,149,150,151,152,153,154Ba, 147,148,149,150,151,152,153,154,155,156,157La, 153,154,155,156,157,158Ce, 153,154,155,156,157,158,159,160,161Pr, 158,159,160,161,162,163Nd, 159,160,161,162,163,164,165Pm, 163,164,165,166,167Sm, 165,166,167,168,169Eu, 169,170,171Gd, 169,170,171,172,173,174Tb, 174,175,176Dy, 174,175,176,177,178Ho, 180Er, 179,180,181Tm, 185Yb, 186,187,188Lu, 191,192,193,194Ta, 198,199Re, 203Os, 203,204,205Ir, 206,207,208Pt, 206,207,208,209,210Au, 209,210,211,212,213,214,215,216Hg, 210,211,212,213,214,215,216,217Tl, 219,220,221,222,223,224Bi, 225,226,227,228,229At, 223Fr(β-); analyzed available data; deduced β-delayed neutron emission probabilities (Pn) and T1/2 for known or potential β-delayed neutron precursors. Comparison with systematics using three different approaches.
doi: 10.1016/j.nds.2020.09.001
2020SE16 Phys.Rev. C 102, 045806 (2020) K.Setoodehnia, A.A.Chen, J.Chen, J.A.Clark, C.M.Deibel, J.Hendriks, D.Kahl, W.N.Lennard, P.D.Parker, D.Seiler, C.Wrede Level structure of 31S via 32S(p, d)31S NUCLEAR REACTIONS 32S(p, d)31S, E=34.5 MeV; measured E(d), I(d) and differential σ(θ) using Enge split-pole magnetic spectrograph at Wright Nuclear Structure Laboratory (WNSL) of Yale University. 31S; deduced levels, J, π. Comparison with results from other reactions, decay, and evaluated data in ENSDF. DWBA analysis of σ(θ) data. Relevance to reaction rates for 30P(p, γ)31S at the temperature range of 0.1 to 1.5 GK, with impact on explosive hydrogen burning in classical novae and type-I x-ray bursts.
doi: 10.1103/PhysRevC.102.045806
2020WI08 Phys.Rev. C 102, 035801 (2020) M.Williams, A.Lennarz, A.M.Laird, U.Battino, J.Jose, D.Connolly, C.Ruiz, A.Chen, B.Davids, N.Esker, B.R.Fulton, R.Garg, M.Gay, U.Greife, U.Hager, D.Hutcheon, M.Lovely, S.Lyons, A.Psaltis, J.E.Riley, A.Tattersall First inverse kinematics study of the 22Ne(p, γ)23Na reaction and its role in AGB star and classical nova nucleosynthesis NUCLEAR REACTIONS 1H(22Ne, γ)23Na, E=161-1274 keV/nucleon from ISAC-I-TRIUMF facility, followed by mass separation of 22Ne fragments; measured Eγ, Iγ, heavy-ion evaporation products, (recoils)γ-coin, time-of-flight spectra using DRAGON array and microchannel plate (MCP) detectors. 23Na; deduced levels, proton resonances, resonance strengths, direct capture cross sections and astrophysical S factors, thermonuclear reaction rates from 0.010 to 10.0 GK. Predicted ejecta mass fractions for 20,21,22Ne, 22,23Na, 24,25,26Mg, 26,27Al. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.102.035801
2019RA06 Phys.Rev. C 99, 021301 (2019) J.S.Randhawa, R.Kanungo, M.Holl, J.D.Holt, P.Navratil, S.R.Stroberg, G.Hagen, G.R.Jansen, M.Alcorta, C.Andreoiu, C.Barnes, C.Burbadge, D.Burke, A.A.Chen, A.Chester, G.Christian, S.Cruz, B.Davids, J.Even, G.Hackman, J.Henderson, S.Ishimoto, P.Jassal, S.Kaur, M.Keefe, D.Kisliuk, R.Krucken, J.Liang, J.Lighthall, E.McGee, J.Measures, M.Moukaddam, E.Padilla-Rodal, A.Shotter, I.J.Thompson, J.Turko, M.Williams, O.Workman Observation of excited states in 20Mg sheds light on nuclear forces and shell evolution NUCLEAR REACTIONS 2H(20Mg, d), (20Mg, d'), E=8.5 MeV/nucleon, [secondary 20Mg beam produced in Si(p, X), E=480 MeV fragmentation reaction using SiC target at ISAC-II facility]; measured scattered deuteron spectra, differential σ(θ) using annular single-sided silicon strip detector array and CsI(Tl) detectors (IRIS reaction spectroscopy facility) at TRIUMF. 20Mg; deduced levels, J, π, proton-unbound resonances. Comparison with ab initio calculations using the valence-space in-medium similarity renormalization-group (VS-IMSRG) approach.
doi: 10.1103/PhysRevC.99.021301
2019TA20 Phys.Lett. B 798, 134894 (2019) M.P.Taggart, C.Akers, A.M.Laird, U.Hager, C.Ruiz, D.A.Hutcheon, M.A.Bentley, J.R.Brown, L.Buchmann, A.A.Chen, J.Chen, K.A.Chipps, A.Choplin, J.M.D'Auria, B.Davids, C.Davis, C.Aa.Diget, L.Erikson, J.Fallis, S.P.Fox, U.Frischknecht, B.R.Fulton, N.Galinski, U.Greife, R.Hirschi, D.Howell, L.Martin, D.Mountford, A.St.J.Murphy, D.Ottewell, M.Pignatari, S.Reeve, G.Ruprecht, S.Sjue, L.Veloce, M.Williams A direct measurement of the 17O(α, γ)21Ne reaction in inverse kinematics and its impact on heavy element production NUCLEAR REACTIONS 4He(17O, γ)21Ne, E=160, 202, 290, 360 keV/nucleon; measured reaction products, Eγ, Iγ; deduced resonance strengths, S-factors, astrophysical reaction rates.
doi: 10.1016/j.physletb.2019.134894
2018AB06 Phys.Rev. C 98, 024309 (2018) E.Aboud, M.B.Bennett, C.Wrede, M.Friedman, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, B.A.Brown, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, E.I.McNeice, Z.Meisel, W.-J.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, H.Schatz, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu Toward complete spectroscopy using β decay: The example of 32Cl (βγ)32S RADIOACTIVITY 32Cl(β+), (EC)[from 9Be(36Ar, X), E=150 MeV/nucleon followed by beam separation and purification using A1900 fragment separator and time-of-flight separation method using Radio Frequency Fragment Separator (RFFS) at NSCL-MSU]; measured Eγ, Iγ, βγ- and βγγ-coin using the Clovershare array of HPGe detectors, 32Cl implants and β by a plastic scintillator at NSCL-MSU. 32S; deduced levels, J, π, β feedings, logft, Gamow-Teller strengths, half-lives, proton, γ and α widths of 8861- and 9650-keV resonances. Comparison with sd USDA and USDB shell model calculations, and with previous experimental values and ENSDF evaluations. 31P(p, α)28Si, E=9650 keV; deduced resonance strength.
doi: 10.1103/PhysRevC.98.024309
2018AS03 Nucl.Instrum.Methods Phys.Res. A899, 6 (2018) B.W.Asher, S.Almaraz-Calderon, O.Nusair, K.E.Rehm, M.L.Avila, A.A.Chen, C.A.Dickerson, C.L.Jiang, B.P.Kay, R.C.Pardo, D.Santiago-Gonzalez, R.Talwar Development of an Isomeric beam of 26Al for nuclear reaction studies NUCLEAR REACTIONS 1H(26Mg, 26Al), E=158.5 MeV; measured reaction products, Eγ, Iγ. 26mAl; deduced σ. Comparison with available data.
doi: 10.1016/j.nima.2018.05.015
2018BE12 Phys.Rev. C 97, 065803 (2018) M.B.Bennett, C.Wrede, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, B.A.Brown, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, N.R.Larson, E.I.McNeice, Z.Meisel, W.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, H.Schatz, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu Detailed study of the decay 31Cl(βγ)31S RADIOACTIVITY 31Cl(β+), (EC)[from 9Be(36Ar, X), E=150 MeV/nucleon using A1900 Fragment Separator for Bρ, and Radio Frequency Fragment Separator (RFFS) for TOF at NSCL-MSU facility]; measured Eγ, Iγ, βγ- and βγγ-coin using Yale Clovershare array for γ detection, and plastic scintillator for β detection. 31S; deduced levels, resonances, J, π, β feedings, logft values, isospin mixing, ratio of thermonuclear reaction rates for 30P(p, γ)31S reaction at T9=0.1-0.4 for the newly discovered state at 6390 keV and the IAS at 6280 keV. Comparison with USDB and USDE shell-model calculations, and previous experimental results.
doi: 10.1103/PhysRevC.97.065803
2018CH08 Phys.Rev. C 97, 025802 (2018) G.Christian, G.Lotay, C.Ruiz, C.Akers, D.S.Burke, W.N.Catford, A.A.Chen, D.Connolly, B.Davids, J.Fallis, U.Hager, D.Hutcheon, A.Mahl, A.Rojas, X.Sun Direct measurement of astrophysically important resonances in 38K(p, γ) 39Ca NUCLEAR REACTIONS 1H(38K, γ)39Ca, E=15.58, 20.56, 27.17 MeV, [38K secondary beam produced at ISAC-I, TRIUMF facility by impinging 500 MeV protons on a high-power TiC production target]; measured recoils using DRAGON spectrometer, prompt Eγ, Iγ, (recoil)γ-coin using bismuth-germanate scintillator array for γ detection. Windowless hydrogen gas target; deduced energies of resonances, resonance strengths for the 386-, 515- and 689-keV proton resonances, astrophysical reaction rates for temperature range of 150-500 MK, abundances of 38Ar, 39K, and 40Ca in the hottest oxygen-neon novae.
doi: 10.1103/PhysRevC.97.025802
2018CO04 Phys.Rev. C 97, 035801 (2018) D.Connolly, P.D.O'Malley, C.Akers, A.A.Chen, G.Christian, B.Davids, L.Erikson, J.Fallis, B.R.Fulton, U.Greife, U.Hager, D.A.Hutcheon, S.Ilyushkin, A.M.Laird, A.Mahl, C.Ruiz Direct measurement of resonance strengths in 34S(α, γ)38Ar at astrophysically relevant energies using the DRAGON recoil separator NUCLEAR REACTIONS 4He(34S, γ)38Ar, E=20.23-25.75 MeV; measured Eγ, Iγ, 34S and 38Ar recoils, (recoil)γ-coin using DRAGON recoil mass separator at ISAC-I, TRIUMF. 38Ar; deduced levels, resonance energies, resonance strengths, thermonuclear reaction rates. Comparison with theoretical calculations using NON-SMOKER Hauser-Feshbach statistical model, and REACLIB and STARLIB library rates.
doi: 10.1103/PhysRevC.97.035801
2018KA11 Phys.Rev. C 97, 015802 (2018) D.Kahl, H.Yamaguchi, S.Kubono, A.A.Chen, A.Parikh, D.N.Binh, J.Chen, S.Cherubini, N.N.Duy, T.Hashimoto, S.Hayakawa, N.Iwasa, H.S.Jung, S.Kato, Y.K.Kwon, S.Nishimura, S.Ota, K.Setoodehnia, T.Teranishi, H.Tokieda, T.Yamada, C.C.Yun, L.Y.Zhang First measurement of 30S + α resonant elastic scattering for the 30S(α, p) reaction rate NUCLEAR REACTIONS 4H(30S, α), E(cm)=1.9-5.5 MeV, [30S secondary beam from 3He(28Si, 30S), E=7.3 MeV/nucleon]; measured Eα, Iα, differential σ(E) using an array of silicon strip detectors (SSDs), and parallel plate avalanche counters (PPACs) for monitoring the 30S beam, ΔE-E plot for light ion particle using the CNS Radioactive Ion Beam separator (CRIB) facility, University of Tokyo, and RIKEN. 34Ar; deduced levels above 11 MeV, α-resonances, J, π, α-widths, proton-width. R-matrix analysis. 30s(α, p), T=1-10 GK; deduced stellar reaction rate using new resonance data, and compared with statistical model (SM) calculations from NON-SMOKER code. Astrophysical impact on one-zone postprocessing type I x-ray burst (XRBs) calculations.
doi: 10.1103/PhysRevC.97.015802
2017AL29 Phys.Rev.Lett. 119, 072701 (2017) S.Almaraz-Calderon, K.E.Rehm, N.Gerken, M.L.Avila, B.P.Kay, R.Talwar, A.D.Ayangeakaa, S.Bottoni, A.A.Chen, C.M.Deibel, C.Dickerson, K.Hanselman, C.R.Hoffman, C.L.Jiang, S.A.Kuvin, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, J.Sethi, C.Ugalde Study of the 26Alm(d, p)27Al Reaction and the Influence of the 26Al 0+ Isomer on the Destruction of 26Al in the Galaxy NUCLEAR REACTIONS C, 2H(26Al, p), E=120 MeV; measured reaction products, Eγ, Iγ. 26Al; deduced σ(θ), reaction rates. Comparison with available data, DWBA calculations.
doi: 10.1103/PhysRevLett.119.072701
2017PE09 Phys.Rev. C 96, 014306 (2017) D.Perez-Loureiro, C.Wrede, M.B.Bennett, S.N.Liddick, A.Bowe, B.A.Brown, A.A.Chen, K.A.Chipps, N.Cooper, E.McNeice, F.Naqvi, R.Ortez, S.D.Pain, J.Pereira, C.Prokop, S.J.Quinn, J.Sakstrup, M.Santia, S.B.Schwartz, S.Shanab, A.Simon, A.Spyrou, E.Thiagalingam Confirmation of the isomeric state in 26P NUCLEAR REACTIONS 9Be(36Ar, 26P), E=150 MeV/nucleon; measured 26P recoils, Eγ, Iγ, (26P)γ-coin, half-life of the isomer by (recoils)γ(t) using A1900 fragment separator, Radio-Frequency Fragment Separator and SeGA array at NSCL-MSU facility. 26P; deduced level, isomer, S(p). Comparison with previous experimental data.
doi: 10.1103/PhysRevC.96.014306
2017WI14 Phys.Rev.Lett. 119, 242701 (2017) R.Wilkinson, G.Lotay, A.Lennarz, C.Ruiz, G.Christian, C.Akers, W.N.Catford, A.A.Chen, D.Connolly, B.Davids, D.A.Hutcheon, D.Jedrejcic, A.M.Laird, L.Martin, E.McNeice, J.Riley, M.Williams Direct Measurement of the Key Ec.m. = 456 keV Resonance in the Astrophysical 19Ne(p, γ)20Na Reaction and Its Relevance for Explosive Binary Systems NUCLEAR REACTIONS H(19Ne, γ), E=9.24 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ. 19Ne, 20Na; deduced resonance parameters, reaction rates. Comparison with available data.
doi: 10.1103/PhysRevLett.119.242701
2016BE05 Phys.Rev.Lett. 116, 102502 (2016) M.B.Bennett, C.Wrede, B.A.Brown, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, N.R.Larson, E.I.McNeice, Z.Meisel, W.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, H.Schatz, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu Isospin Mixing Reveals 30P(p, γ)31S Resonance Influencing Nova Nucleosynthesis RADIOACTIVITY 31Cl(EC), (β+) [from Be(36Ar, X)31Cl, E=150 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ, β-γ-coin.; deduced energy levels and intensities, J, π, resonance parameters. Comparison with shell model calculations.
doi: 10.1103/PhysRevLett.116.102502
2016BE19 Phys.Rev. C 93, 064310 (2016) M.B.Bennett, C.Wrede, B.A.Brown, S.N.Liddick, D.Perez-Loureiro, D.W.Bardayan, A.A.Chen, K.A.Chipps, C.Fry, B.E.Glassman, C.Langer, N.R.Larson, E.I.McNeice, Z.Meisel, W.Ong, P.D.O'Malley, S.D.Pain, C.J.Prokop, S.B.Schwartz, S.Suchyta, P.Thompson, M.Walters, X.Xu Isobaric multiplet mass equation in the A = 31, T = 3/2 quartets RADIOACTIVITY 31Cl(β+); measured Eγ, Iγ, Eβ, βγ-, βγγ-coin using the Clovershare array at NSCL-MSU laboratory. 31S; deduced levels, IAS, isospin mixing, β feedings, isospin T=3/2 states. 31Cl; discussed predictions for the first excited state. Comparison with USDB and USDE shell-model calculations. ATOMIC MASSES 31Cl, 31S, 31P, 31Si; analyzed isobaric multiplet mass equation (IMME) for T=3/2 quartet by quadratic and cubic fits. Discussed IMME breakdown and isospin mixing. Comparison with USDB and USDE shell-model calculations.
doi: 10.1103/PhysRevC.93.064310
2016LO03 Phys.Rev.Lett. 116, 132701 (2016) G.Lotay, G.Christian, C.Ruiz, C.Akers, D.S.Burke, W.N.Catford, A.A.Chen, D.Connolly, B.Davids, J.Fallis, U.Hager, D.A.Hutcheon, A.Mahl, A.Rojas, X.Sun Direct Measurement of the Astrophysical 38K(p, γ)39Ca Reaction and Its Influence on the Production of Nuclides toward the End Point of Nova Nucleosynthesis NUCLEAR REACTIONS 1H(38K, γ), E=386, 515, 689 keV; measured reaction products, Eγ, Iγ; deduced yields, resonance parameters, astrophysical reaction rates. Comparison with available data.
doi: 10.1103/PhysRevLett.116.132701
2016PE10 Phys.Rev. C 93, 064320 (2016) D.Perez-Loureiro, C.Wrede, M.B.Bennett, S.N.Liddick, A.Bowe, B.A.Brown, A.A.Chen, K.A.Chipps, N.Cooper, D.Irvine, E.McNeice, F.Montes, F.Naqvi, R.Ortez, S.D.Pain, J.Pereira, C.J.Prokop, J.Quaglia, S.J.Quinn, J.Sakstrup, M.Santia, S.B.Schwartz, S.Shanab, A.Simon, A.Spyrou, E.Thiagalingam β-delayed γ decay of 26P: Possible evidence of a proton halo RADIOACTIVITY 26P, 24Al(β+), (EC)[from 9Be(36Ar, X), E=150 MeV/nucleon using A1900 fragment separator and the Radio-Frequency Fragment Separator (RFFS) at NSCL-MSU]; measured Eγ, Iγ, 26P ions, Eβ, Iβ, γγ-, βγγ-coin using GeDSSD detector for ions and β particles and SeGA array for γ rays. 26Si; deduced levels, J, π, Iβ feedings, B(GT) strengths, logft, mirror asymmetry, proton halo. Comparisons with β decay of 26Na mirror nucleus, previous experimental data for 26Si levels, and USDB shell-model calculations. 24Mg; observed γ rays. 25Al(p, γ)26Si, T9=0.01-0.5; calculated astrophysical reaction rates.
doi: 10.1103/PhysRevC.93.064320
2016SA13 Phys.Lett. B 755, 481 (2016) A.Sanetullaev, R.Kanungo, J.Tanaka, M.Alcorta, C.Andreoiu, P.Bender, A.A.Chen, G.Christian, B.Davids, J.Fallis, J.P.Fortin, N.Galinski, A.T.Gallant, P.E.Garrett, G.Hackman, B.Hadinia, S.Ishimoto, M.Keefe, R.Krucken, J.Lighthall, E.McNeice, D.Miller, J.Purcell, J.S.Randhawa, T.Roger, A.Rojas, H.Savajols, A.Shotter, I.Tanihata, I.J.Thompson, C.Unsworth, P.Voss, Z.Wang Investigation of the role of 10Li resonances in the halo structure of 11Li(p, d)10Li through the transfer reaction NUCLEAR REACTIONS 1H(11Li, d), (11Li, p), E=5.7 MeV/nucleon; measured reaction products; deduced resonance parameters, spectroscopic factor, σ(θ). DWBA analysis.
doi: 10.1016/j.physletb.2016.02.060
2015FR01 Phys.Rev. C 91, 015803 (2015) C.Fry, C.Wrede, S.Bishop, B.A.Brown, A.A.Chen, T.Faestermann, R.Hertenberger, A.Parikh, D.Perez-Loureiro, H.-F.Wirth, A.Garcia, R.Ortez Discovery of 34g, mCl (p, γ) 35Ar resonances activated at classical nova temperatures NUCLEAR REACTIONS 36Ar(d, t), E=22 MeV; measured triton spectra, σ(θ) using Q3D magnetic spectrograph at MLL-Garching facility. 35Ar; deduced levels. 34Cl(p, γ)35Ar; deduced resonance energies. 35Ar, 35Cl; compared experimental level densities of mirror nuclei with shell-model calculations.
doi: 10.1103/PhysRevC.91.015803
2015KA15 Phys.Rev.Lett. 114, 192502 (2015) R.Kanungo, A.Sanetullaev, J.Tanaka, S.Ishimoto, G.Hagen, T.Myo, T.Suzuki, C.Andreoiu, P.Bender, A.A.Chen, B.Davids, J.Fallis, J.P.Fortin, N.Galinski, A.T.Gallant, P.E.Garrett, G.Hackman, B.Hadinia, G.Jansen, M.Keefe, R.Krucken, J.Lighthall, E.McNeice, D.Miller, T.Otsuka, J.Purcell, J.S.Randhawa, T.Roger, A.Rojas, H.Savajols, A.Shotter, I.Tanihata, I.J.Thompson, C.Unsworth, P.Voss, Z.Wang Evidence of Soft Dipole Resonance in 11Li with Isoscalar Character NUCLEAR REACTIONS 2H(11Li, X)7Li/8Li/9Li/10Li/11Li, E=5.5 MeV/nucleon; measured reaction products. 11Li; deduced yields, σ(θ), excitation energy, soft dipole resonance. Comparison with ab initio calculations in the coupled cluster framework.
doi: 10.1103/PhysRevLett.114.192502
2015SC16 Phys.Rev. C 92, 031302 (2015) S.B.Schwartz, C.Wrede, M.B.Bennett, S.N.Liddick, D.Perez-Loureiro, A.Bowe, A.A.Chen, K.A.Chipps, N.Cooper, D.Irvine, E.McNeice, F.Montes, F.Naqvi, R.Ortez, S.D.Pain, J.Pereira, C.Prokop, J.Quaglia, S.J.Quinn, J.Sakstrup, M.Santia, S.Shanab, A.Simon, A.Spyrou, E.Thiagalingam Observation of Doppler broadening in β-delayed proton-γ decay RADIOACTIVITY 26P(β+p)[from 9Be(36Ar, X), E=150 MeV/nucleon and A1900 fragment separator at NSCL-MSU]; measured Eγ, first observation of Doppler-broadened γ rays in β-delayed proton-γ decay, Iγ, γγ-coin, Eβ, βγ-correlated spectra using Si detectors for β and implanted nuclei, SeGA array for γ rays 25Al; deduced levels, β+p feedings. 26Si; deduced energies of proton emitting states from the kinematic analysis of Doppler-broadened γ rays. Comparison with previous experimental data. 24Mg, 26Al, 26Si; observed γ rays.
doi: 10.1103/PhysRevC.92.031302
2014HU16 Phys.Rev. C 90, 025803 (2014) J.Hu, J.J.He, A.Parikh, S.W.Xu, H.Yamaguchi, D.Kahl, P.Ma, J.Su, H.W.Wang, T.Nakao, Y.Wakabayashi, T.Teranishi, K.I.Hahn, J.Y.Moon, H.S.Jung, T.Hashimoto, A.A.Chen, D.Irvine, C.S.Lee, S.Kubono Examination of the role of the 14O(α, p)17F reaction rate in type-I x-ray bursts NUCLEAR REACTIONS 1H(17F, p), E=3.6 MeV/nucleon, [17F secondary beam from 2H(16O, n), E=6.6 MeV/nucleon primary reaction]; measured Ep, Ip, angular distribution using radioactive ion beam separator (CRIB) at CNS-RIKEN facility. 18Ne; deduced levels, resonances, J, π, L-transfers, widths, proton partial widths, resonance strengths. R-matrix analysis of experimental data. Comparison with previous experimental results. 14O(α, p)17F, at T9=0.25-3.0; deduced reaction rates and compared with other studies. Relevance to hot-CNO cycle of the rp-process in type-I x-ray bursts (XRBs).
doi: 10.1103/PhysRevC.90.025803
2014KO41 Eur.Phys.J. A 50, 136 (2014) T.Komatsubara, S.Kubono, T.Hayakawa, T.Shizuma, A.Ozawa, Y.Ito, Y.Ishibashi, T.Moriguchi, H.Yamaguchi, D.Kahl, S.Hayakawa, D.N.Binh, A.A.Chen, J.Chen, K.Setoodehnia, T.Kajino Excited states above the proton threshold in 26Si
doi: 10.1140/epja/i2014-14136-4
2014MC08 Nucl.Data Sheets 120, 88 (2014) E.Mcneice, K.Setoodehnia, B.Singh, Y.Abe, D.N.Binh, A.A.Chen, J.Chen, S.Cherubini, S.Fukuoka, T.Hashimoto, T.Hayakawa, Y.Ishibashi, Y.Ito, D.Kahl, T.Komatsubara, S.Kubono, T.Moriguchi, D.Nagae, R.Nishikiori, T.Niwa, A.Ozawa, T.Shizuma, H.Suzuki, H.Yamaguchi, T.Yuasa In-beam γ-ray Spectroscopy of 30P via the 28Si(3He, pγ)30P Reaction NUCLEAR REACTIONS 28Si(3He, p), E=9 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced level structure, J, π, resonance states, γ-γ directional correlation of oriented nuclei. Comparison with available data.
doi: 10.1016/j.nds.2014.07.014
2013BE41 Phys.Rev.Lett. 111, 232503 (2013) M.B.Bennett, C.Wrede, K.A.Chipps, J.Jose, S.N.Liddick, M.Santia, A.Bowe, A.A.Chen, N.Cooper, D.Irvine, E.McNeice, F.Montes, F.Naqvi, R.Ortez, S.D.Pain J.Pereira, C.Prokop, J.Quaglia, S.J.Quinn, S.B.Schwartz, S.Shanab, A.Simon, A.Spyrou, E.Thiagalingam Classical-Nova Contribution to the Milky Way's 26Al Abundance: Exit Channel of the Key 25Al(p, γ)26Si Resonance RADIOACTIVITY 26P(β+) [from Be(36Ar, X)26P, E=150 MeV/nucleon]; measured Eβ, Iβ, Eγ, Iγ, βγ- and βγγ-coin.; deduced resonances energy, J, π. Astrophysical implications.
doi: 10.1103/PhysRevLett.111.232503
2013FA10 Phys.Rev. C 88, 045801 (2013) J.Fallis, A.Parikh, P.F.Bertone, S.Bishop, L.Buchmann, A.A.Chen, G.Christian, J.A.Clark, J.M.D'Auria, B.Davids, C.M.Deibel, B.R.Fulton, U.Greife, B.Guo, U.Hager, C.Herlitzius, D.A.Hutcheon, J.Jose, A.M.Laird, E.T.Li, Z.H.Li, G.Lian, W.P.Liu, L.Martin, K.Nelson, D.Ottewell, P.D.Parker, S.Reeve, A.Rojas, C.Ruiz, K.Setoodehnia, S.Sjue, C.Vockenhuber, Y.B.Wang, C.Wrede Constraining nova observables: Direct measurements of resonance strengths in 33S(p, γ)34Cl NUCLEAR REACTIONS 1H(33S, γ)34Cl, E=194-514 MeV/nucleon; measured particle spectra, time-of-flight using DRAGON at ISAC-TRIUMF facility. 34Cl; deduced levels, resonances, resonance strengths, thermonuclear reaction rates for 33S(p, γ)34Cl reaction at T9=0.15-0.40, composition of 32,33,34S, 35,37Cl, 36,38Ar, 38,39K, 40Ca in oxygen-neon nova ejecta. Implications for nova nucleosynthesis.
doi: 10.1103/PhysRevC.88.045801
2013IR02 Phys.Rev. C 88, 055803 (2013) D.Irvine, A.A.Chen, A.Parikh, K.Setoodehnia, T.Faestermann, R.Hertenberger, H.-F.Wirth, V.Bildstein, S.Bishop, J.A.Clark, C.M.Deibel, J.Hendriks, C.Herlitzius, R.Krucken, W.N.Lennard, O.Lepyoshkina, R.Longland, G.Rugel, D.Seiler, K.Straub, C.Wrede Evidence for the existence of the astrophysically important 6.40-MeV state of 31S NUCLEAR REACTIONS 32S(d, t), E=24 MeV; measured E(t), I(t), σ(θ), using Q3D spectrograph at MLL-Garching facility. 31S; deduced levels, J, π, 31S and 31P mirror assignments. 30P(p, γ)31S; discussed impact on thermonuclear reaction rate in explosive hydrogen burning in classical novae. Comparison of 31S level structure with previous experimental results and evaluated data.
doi: 10.1103/PhysRevC.88.055803
2013LA01 Phys.Rev.Lett. 110, 032502 (2013) A.M.Laird, A.Parikh, A.St.J.Murphy, K.Wimmer, A.A.Chen, C.M.Deibel, T.Faestermann, S.P.Fox, B.R.Fulton, R.Hertenberger, D.Irvine, J.Jose, R.Longland, D.J.Mountford, B.Sambrook, D.Seiler, H.-F.Wirth Is γ-Ray Emission from Novae Affected by Interference Effects in the 18F(p, α)15O Reaction? NUCLEAR REACTIONS 19F(3He, t), E=25 MeV; measured reaction products. 19Ne; deduced energy levels, J, π, σ(θ), resonance parameters, total reaction rate. Comparison with available data, DWBA calculations.
doi: 10.1103/PhysRevLett.110.032502
2013SE08 Phys.Rev. C 87, 065801 (2013) K.Setoodehnia, A.A.Chen, D.Kahl, T.Komatsubara, J.Jose, R.Longland, Y.Abe, D.N.Binh, J.Chen, S.Cherubini, J.A.Clark, C.M.Deibel, S.Fukuoka, T.Hashimoto, T.Hayakawa, J.Hendriks, Y.Ishibashi, Y.Ito, S.Kubono, W.N.Lennard, T.Moriguchi, D.Nagae, R.Nishikiori, T.Niwa, A.Ozawa, P.D.Parker, D.Seiler, T.Shizuma, H.Suzuki, C.Wrede, H.Yamaguchi, T.Yuasa Nuclear structure of 30S and its implications for nucleosynthesis in classical novae NUCLEAR REACTIONS 32S(p, t), E=34.5 MeV; measured triton spectra, σ(θ) using Enge split-pole magnetic spectrograph at WNSL, Yale facility. 28Si(3He, n), E=9 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ)(DCO) at UTTAC facility. 30S; deduced levels, resonances, J, π, multipolarity, σ/J, mixing ratio, branching ratios, proton and gamma widths, resonance strengths. DWBA and coupled reaction channel analyses of σ(θ) data in (p, t). 29P(p, γ)30S, at T=0.01-1.5 GK; deduced astrophysical reaction rates, nova isotopic abundances of Si to Ca mass region isotopes using 1D hydrodynamic model.
doi: 10.1103/PhysRevC.87.065801
2012CH04 Phys.Rev. C 85, 015805 (2012) J.Chen, A.A.Chen, G.Amadio, S.Cherubini, H.Fujikawa, S.Hayakawa, J.J.He, N.Iwasa, D.Kahl, L.H.Khiem, S.Kubono, S.Kurihara, Y.K.Kwon, M.La Cognata, J.Y.Moon, M.Niikura, S.Nishimura, J.Pearson, R.G.Pizzone, T.Teranishi, Y.Togano, Y.Wakabayashi, H.Yamaguchi Strong 25Al+p resonances via elastic proton scattering with a radioactive 25Al beam NUCLEAR REACTIONS 1H(25Al, p), [25Al secondary beam from 2H(24Mg, n), E=7.5 MeV/nucleon primary reaction], E=3.4 MeV/nucleon; measured Ep, Ip, energy loss, σ(E, θ). 26Si; deduced levels, resonances, J, π, proton widths. R-matrix analysis of excitation function data. RIKEN-CNS facility. Comparison of energy levels with results from other reaction studies.
doi: 10.1103/PhysRevC.85.015805
2012CH18 Phys.Rev. C 85, 045809 (2012) J.Chen, A.A.Chen, A.M.Amthor, D.Bazin, A.D.Becerril, A.Gade, D.Galaviz, T.Glasmacher, D.Kahl, G.Lorusso, M.Matos, C.V.Ouellet, J.Pereira, H.Schatz, K.Smith, B.Wales, D.Weisshaar, R.G.T.Zegers 26Si excited states via one-neutron removal from a 27Si radioactive ion beam NUCLEAR REACTIONS 1H, C(27Si, 26Si), [27Si secondary beam from 9Be(36Ar, X), E=150 MeV/nucleon primary beam], E=84.3 MeV/nucleon; measured energy loss and residual energy for the fragments, Eγ, Iγ, γγ-coin, Doppler corrected γ-ray spectra using SeGA array at NSCL, MSU facility. 26Si; deduced levels. Comparison with previous studies.
doi: 10.1103/PhysRevC.85.045809
2012KU27 Prog.Theor.Phys.(Kyoto), Suppl. 196, 346 (2012) S.Kubono, N.B.Dam, S.Hayakawa, H.Hashimoto, D.Kahl, H.Yamaguchi, Y.Wakabayashi, T.Teranishi, N.Iwasa, T.Komatsubara, S.Kato, A.Chen, S.Cherubini, S.H.Choi, I.S.Hahn, J.J.He, H.K.Le, C.S.Lee, Y.K.Kwon, S.Wanajo, H.-T.Janka Alpha-Cluster Dominance in the αp Process in Explosive Hydrogen Burning NUCLEAR REACTIONS 4He(11C, p), E(cm)=1-4.5 MeV; 4He(21Na, p), E(cm)=2-7 MeV; measured reaction products; deduced σ, resonances, reaction for αp process. Comparison with available data.
doi: 10.1143/PTPS.196.346
2012SA22 Phys.Rev.Lett. 108, 242701 (2012) P.J.C.Salter, M.Aliotta, T.Davinson, H.Al Falou, A.Chen, B.Davids, B.R.Fulton, N.Galinski, D.Howell, G.Lotay, P.Machule, A.StJ.Murphy, C.Ruiz, S.Sjue, M.Taggart, P.Walden, P.J.Woods Measurement of the 18Ne(α, p0)21Na Reaction Cross Section in the Burning Energy Region for X-Ray Bursts NUCLEAR REACTIONS 18Ne(α, p), E(cm)=1.2-2.6 MeV; measured reaction products, Eα, Iα; deduced σ, astrophysical reaction rates. HCNO-breakout routes into the rp process implications, comparison with Hauser-Feshbach calculations.
doi: 10.1103/PhysRevLett.108.242701
2011MA82 J.Phys.:Conf.Ser. 312, 042014 (2011) L.Martin, L.Buchmann, J.F.Carpino, A.Chen, A.Couture, B.Davids, J.Fallis, S.P.Fox, U.Hager, A.Hussein, A.M.Laird, K.Olchanski, D.Ottewell, C.Ruiz, G.Ruprecht, G.Sheffer, S.Sjue, O.Tengblad, F.Tovesson NEURAL - a tracking detector for neutron-induced reactions of astrophysical importance
doi: 10.1088/1742-6596/312/4/042014
2011PA14 Phys.Rev. C 83, 045806 (2011) A.Parikh, K.Wimmer, T.Faestermann, R.Hertenberger, J.Jose, R.Longland, H.-F.Wirth, V.Bildstein, S.Bishop, A.A.Chen, J.A.Clark, C.M.Deibel, C.Herlitzius, R.Krucken, D.Seiler, K.Straub, C.Wrede Improving the 30P(p, γ )31S rate in oxygen-neon novae: Constraints on Jπ values for proton-threshold states in 31S NUCLEAR REACTIONS 31P(3He, t), E=25 MeV; measured E(t), I(t), σ(θ). 31S; deduced levels, J, π. 30P(p, γ)31S; deduced astrophysical reaction rates. Finite-range DWBA analysis. Comparison with previous experimental reaction rates and Hauser-Feshbach statistical model estimates.
doi: 10.1103/PhysRevC.83.045806
2011PA40 Phys.Rev. C 84, 065808 (2011) A.Parikh, K.Wimmer, T.Faestermann, R.Hertenberger, H.-F.Wirth, A.A.Chen, J.A.Clark, C.M.Deibel, C.Herlitzius, R.Krucken, D.Seiler, K.Setoodehnia, K.Straub, C.Wrede Production of 26Al in stellar hydrogen-burning environments: Spectroscopic properties of states in 27Si NUCLEAR REACTIONS 28Si(3He, α), E=25 MeV; measured Eα, Iα, σ(θ) using Q3D magnetic spectrograph. 27Si; deduced levels, J, π, L-values, spectroscopic factors. Finite-range DWBA analysis. Comparison with previous measurements and with shell-model calculations using OXBASH code. 26Al(p, γ)27Si; discussed thermonuclear reaction rate.
doi: 10.1103/PhysRevC.84.065808
2011SE03 Phys.Rev. C 83, 018803 (2011) K.Setoodehnia, A.A.Chen, T.Komatsubara, S.Kubono, D.N.Binh, J.F.Carpino, J.Chen, T.Hashimoto, T.Hayakawa, Y.Ishibashi, Y.Ito, D.Kahl, T.Moriguchi, H.Oishi, A.Ozawa, T.Shizuma, Y.Sugiyama, H.Yamaguchi Spins and parities of astrophysically important 30S states from 28Si(3He, nγ )30S NUCLEAR REACTIONS 28Si(3He, n), E=9 MeV; measured Eγ, Iγ, γγ-coin, natural Si target. 30S; deduced levels, J, π. Comparison with mirror nucleus 30Si. Astrophysical relevance to the reaction rates for 29P(p, γ).
doi: 10.1103/PhysRevC.83.018803
2010CH38 Nucl.Phys. A834, 667c (2010) J.Chen, A.A.Chen, H.Schatz, S.Kubono, A.B.Reyes, A.Smith, B.Wales, C.Ouellet, D.Kahl, D.G.Redondo, G.Lorusso, J.LeNestour, J.P.Conca, K.Smith, M.Amthor, M.Matos, H.Yamaguchi, N.Iwasa, S.Hayakawa, S.Michimasa, T.Teranishi, Y.Kurihawa, Y.Wakabayashi Study of astrophysically important states in 26Si with the p(27Si, 26Si*)d reaction and the p(25Al, p)25Al elastic scattering NUCLEAR REACTIONS 1H(25Al, 25Al), E≈3.4 MeV/nucleon; measured σ(θ). 1H(27Si, 26Si), E=89 MeV/nucleon; measured Eγ, Iγ, E(particle), I(particle), (particle)γ-coin. 26Si deduced levels, J, π, resonance parameteres using R-matrix fit.
doi: 10.1016/j.nuclphysa.2010.01.119
2010ER02 Phys.Rev. C 81, 045808 (2010) L.Erikson, C.Ruiz, F.Ames, P.Bricault, L.Buchmann, A.A.Chen, J.Chen, H.Dare, B.Davids, C.Davis, C.M.Deibel, M.Dombsky, S.Foubister, N.Galinski, U.Greife, U.Hager, A.Hussein, D.A.Hutcheon, J.Lassen, L.Martin, D.F.Ottewell, C.V.Ouellet, G.Ruprecht, K.Setoodehnia, A.C.Shotter, A.Teigelhofer, C.Vockenhuber, C.Wrede, A.Wallner First direct measurement of the 23Mg(p, γ)24Al reaction NUCLEAR REACTIONS 23Mg(p, γ)24Al, E=500 keV; measured Eγ, Iγ, γγ-, (recoil)γ-coin, (recoil)γ(t), thick target yields, resonance strengths; deduced resonance, reaction rates. DRAGON recoil spectrometer. GEANT3 simulations.
doi: 10.1103/PhysRevC.81.045808
2010GA36 J.Phys.:Conf.Ser. 202, 012009 (2010) D.Galaviz, A.M.Amthor, D.Bazin, A.D.Becerril, B.A.Brown, A.A.Chen, A.Cole, J.M.Cook, T.Elliot, A.Estrade, Z.S.Fulop, A.Gade, T.Glasmacher, A.Heger, M.E.Howard, R.Kessler, G.Lorusso, M.Matos, F.Montes, W.Muller, J.Pereira, H.Schatz, B.Sherrill, F.Schertz, Y.Shimbara, E.Smith, K.Smith, A.Tamii, A.Stolz, D.Weisshaar, M.Wallace, M.Wiescher, R.G.T.Zegers Nucleosynthesis of proton-rich nuclei. Experimental results on the rp-process NUCLEAR REACTIONS 9Be(36Ar, X)30S, (40Ca, X)36K, (40Ca, X)37Ca, E=140 MeV/nucleon; measured 30S, 36K, 37Ca [obtained by further stripping of one nucleon from fragmentation product] in-flight Eγ, Iγ, (recoil)γ-coin; deduced 29P(p, γ)30S stellar reaction rate relevant to X-bursts. Compared with other published reaction rates.
doi: 10.1088/1742-6596/202/1/012009
2010SE07 Phys.Rev. C 82, 022801 (2010) K.Setoodehnia, A.A.Chen, J.Chen, J.A.Clark, C.M.Deibel, S.D.Geraedts, D.Kahl, P.D.Parker, D.Seiler, C.Wrede Structure of 30S with 32S(p, t)30S and the thermonuclear 29P(p, γ)30S reaction rate NUCLEAR REACTIONS 32S(p, t), E=34.5 MeV; measured triton spectra. 30S; deduced level, J, π, γ widths, proton widths, resonance strengths; deduced astrophysical reaction rates for 29P(p, γ). 30Si, 30S; deduced mirror states.
doi: 10.1103/PhysRevC.82.022801
2010SE08 Nucl.Phys. A834, 205c (2010) K.Setoodehnia, A.-A.Chen, J.Chen, J.-A.Clark, C.Deibel, D.Kahl, W.-N.Lennard, P.-D.Parker, C.Wrede Study of astrophysically important resonant states in 30S using the 32S(p, t)30S reaction NUCLEAR REACTIONS 32S(p, t), E=33.5, 34.5 MeV; measured E(triton), I(triton), Eγ, Iγ, (triton)γ-coin. 30S deduced levels, J, π.
doi: 10.1016/j.nuclphysa.2009.12.041
2010SE22 J.Phys.:Conf.Ser. 202, 012042 (2010) K.Setoodehnia, A.A.Chen, J.Chen, J.A.Clark, C.Deibel, D.Kahl, W.N.Lennard, P.D.Parker, C.Wrede Study of astrophysically important resonant states in 30S using the 32S(p, t)30S reaction NUCLEAR REACTIONS 32S(p, t)30S, E=33.5, 34.5 MeV; measured E(triton), I(triton, θ); deduced levels, J, π. J, π preliminary, not shown in the paper.
doi: 10.1088/1742-6596/202/1/012042
2010WR01 Phys.Rev. C 81, 055503 (2010) C.Wrede, J.A.Clark, C.M.Deibel, T.Faestermann, R.Hertenberger, A.Parikh, H.-F.Wirth, S.Bishop, A.A.Chen, K.Eppinger, A.Garcia, R.Krucken, O.Lepyoshkina, G.Rugel, K.Setoodehnia Toward precise QEC values for the superallowed 0+ → 0+ β decays of T=2 nuclides: The masses of 20Na, 24Al, 28P, and 32Cl NUCLEAR REACTIONS 20Ne, 24Mg, 28Si, 32S, 36Ar(3He, t), E=32 MeV; measured triton spectra using Q3D magnetic spectrograph; deduced levels, Q values, mass excesses. ATOMIC MASSES 20Na, 24Al, 28P, 32Cl; measured mass excesses using (3He, t) reaction. 36Ar(3He, t)36K used for calibration. Comparison with AME-2003.
doi: 10.1103/PhysRevC.81.055503
2010WR02 Phys.Rev. C 82, 035805 (2010) C.Wrede, J.A.Clark, C.M.Deibel, T.Faestermann, R.Hertenberger, A.Parikh, H.-F.Wirth, S.Bishop, A.A.Chen, K.Eppinger, B.M.Freeman, R.Krucken, O.Lepyoshkina, G.Rugel, K.Setoodehnia Properties of 20Na, 24Al, 28P, 32Cl, and 36K for studies of explosive hydrogen burning NUCLEAR REACTIONS 20Ne, 24Mg, 28Si, 32S, 36Ar(3He, t), E=32 MeV; measured E(t), I(t); deduced levels and resonances. 19Ne, 23Mg, 27Si, 31S, 35Ar(p, γ); deduced improved thermonuclear reaction rates. 36Cl, 36Ar, 36K; analyzed A=36, T=1 triplet states. Comparison with previous experiments.
doi: 10.1103/PhysRevC.82.035805
2009LI33 Nucl.Technology 168, 354 (2009) Y.-H.Liu, C.-K.Huang, P.-E.Tsai, A.-Y.Chen, H.-M.Liu, S.-C.Lee, S.-H.Jiang BNCT Epithermal Neutron Beam Mapping by Using Indirect Neutron Radiography
doi: 10.13182/NT09-A9208
2008KW01 J.Korean Phys.Soc. 53, 1141 (2008) Y.K.Kwon, C.S.Lee, J.Y.Moon, J.H.Lee, J.Y.Kim, M.K.Cheoun, S.Kubono, N.Iwasa, K.Inafuku, H.Yamaguchi, J.J.He, A.Saito, Y.Wakabayashi, H.Fujikawa, G.Amadio, L.H.Khiem, M.Tanaka, A.A.Chen, S.Kato, Y.Fuchi, N.Fukunishi Astrophysically Important 26Si States Studied with the 28Si(4He, 6He)26Si Reaction NUCLEAR REACTIONS 28Si(α, 6He), E=120 MeV; measured charged particle spectra, σ(θ). 26Si; deduced level energies.
doi: 10.3938/jkps.53.1141
2008VO01 J.Phys.(London) G35, 014034 (2008) C.Vockenhuber, C.O.Ouellet, L.-S.The, L.Buchmann, J.Caggiano, A.A.Chen, J.M.D'Auria, B.Davids, L.Fogarty, D.Frekers, A.Hussein, D.A.Hutcheon, W.Kutschera, D.Ottewell, M.Paul, M.M.Pavan, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, A.Wallner 40Ca(α, γ)44Ti and the production of 44Ti in supernovae NUCLEAR REACTIONS 4He(40Ca, γ), E=600-1150 keV/nucleon; measured Eγ, γγ-, (recoil)γ-coin, excitation function.
doi: 10.1088/0954-3899/35/1/014034
2007BA49 Nucl.Phys. A787, 118c (2007) G.C.Ball, A.Andreyev, R.A.E.Austin, D.Bandyopadhyay, J.A.Becker, A.J.Boston, H.C.Boston, A.Chen, R.Churchman, F.Cifarelli, D.Cline, R.J.Cooper, D.S.Cross, D.Dashdorj, G.Demand, M.R.Dimmock, T.E.Drake, P.Finlay, F.Gagon-Moisan, A.T.Gallant, P.E.Garrett, K.L.Green, A.N.Grint, G.Hackman, L.J.Harkness, A.B.Hayes, R.Kanungo, K.G.Leach, G.Lee, R.Maharaj, J.-P.Martin, A.C.Morton, S.Mythili, L.Nelson, O.Newman, P.J.Nolan, E.Padilla-Rodal, C.J.Pearson, A.A.Phillips, M.Porter-Peden, J.J.Ressler, R.Roy, C.Ruiz, H.Savajols, F.Sarazin, M.A.Schumaker, D.P.Scraggs, C.E.Svensson, J.C.Waddington, J.M.Wan, A.Whitbeck, S.J.Williams, J.Wong, C.Y.Wu TRIUMF-ISAC Gamma-Ray Escape-Suppressed Spectrometer (TIGRESS): a versatile tool for radioactive beam physics NUCLEAR REACTIONS Ti(21Ne, X), (20Na, X), (21Na, X), E=1.7 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, DSA.
doi: 10.1016/j.nuclphysa.2006.12.022
2007GR11 Nucl.Instrum.Methods Phys.Res. B261, 1089 (2007) U.Greife, J.Livesay, C.Jewett, K.Chipps, F.Sarazin, D.Bardayan, J.Blackmon, C.Nesaraja, M.S.Smith, A.Champagne, R.Fitzgerald, K.Jones, J.Thomas, R.Kozub, L.Buchmann, J.Caggiano, D.Hunter, D.Hutcheon, A.Olin, D.Ottewell, J.Rogers, C.Ruiz, G.Ruprecht, M.Trinczek, C.Vockenhuber, S.Bishop, J.D'Auria, M.Lamay, W.Liu, C.Wrede, M.L.Chatterjee, A.A.Chen, J.Pearson, S.Engel, A.M<.Laird, D.Gigliotti, A.Hussein Recent results of experiments with radioactive 21Na and 7Be ion beams NUCLEAR REACTIONS 1H(21Na, γ), E=1.18 MeV/nucleon; measured Eγ, Iγ, yields. 1H(7Be, X), E=4-27 MeV; measured elastic and inelastic scattering σ.
doi: 10.1016/j.nimb.2007.03.055
2007VO03 Nucl.Instrum.Methods Phys.Res. B259, 688 (2007) C.Vockenhuber, C.O.Ouellet, L.Buchmann, J.Caggiano, A.A.Chen, J.M.D'Auria, D.Frekers, A.Hussein, D.A.Hutcheon, W.Kutschera, K.Jayamanna, D.Ottewell, M.Paul, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, A.Wallner The 40Ca(α, γ)44Ti reaction at DRAGON NUCLEAR REACTIONS 4He(40Ca, γ)44Ti, E=1.135 MeV/nucleon; measured yield and resonance strength at DRAGON recoil mass spectrometer.
doi: 10.1016/j.nimb.2007.01.222
2007VO06 Phys.Rev. C 76, 035801 (2007) C.Vockenhuber, C.O.Ouellet, L.-S.The, L.Buchmann, J.Caggiano, A.A.Chen, H.Crawford, J.M.D'Auria, B.Davids, L.Fogarty, D.Frekers, A.Hussein, D.A.Hutcheon, W.Kutschera, A.M.Laird, R.Lewis, E.O'Connor, D.Ottewell, M.Paul, M.M.Pavan, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, B.Wales, A.Wallner Measurement of the 40Ca(α, γ)44Ti reaction relevant for supernova nucleosynthesis NUCLEAR REACTIONS 4He(40Ca, γ)44Ti, E=0.60-1.15 MeV/nucleon; measured recoil energies, yields, and cross section.
doi: 10.1103/PhysRevC.76.035801
2006MA81 Phys.Rev.Lett. 97, 242503 (2006) C.Matei, L.Buchmann, W.R.Hannes, D.A.Hutcheon, C.Ruiz, C.R.Brune, J.Caggiano, A.A.Chen, J.D'Auria, A.Laird, M.Lamey, ZH.Li, WP.Liu, A.Olin, D.Ottewell, J.Pearson, G.Ruprecht, M.Trinczek, C.Vockenhuber, C.Wrede Measurement of the Cascade Transition via the First Excited State of 16O in the 12C(α, γ)16O Reaction, and Its S Factor in Stellar Helium Burning NUCLEAR REACTIONS 4He(12C, γ), E(cm)=2.22-5.42 MeV; measured Eγ, Iγ, (particle)γ-coin; deduced σ, astrophysical S-factor. Recoil separator.
doi: 10.1103/PhysRevLett.97.242503
2006MU07 Phys.Rev. C 73, 034320 (2006) A.St.J.Murphy, M.Aliotta, T.Davinson, C.Ruiz, P.J.Woods, J.M.D'Auria, L.Buchmann, A.A.Chen, A.M.Laird, F.Sarazin, P.Walden, B.R.Fulton, J.E.Pearson, B.A.Brown Level structure of 21Mg: Nuclear and astrophysical implications NUCLEAR REACTIONS 1H(20Na, p), E=1.25, 1.60 MeV/nucleon; measured recoil proton spectra, σ(θ). 21Mg deduced resonance energies, widths. 20Na(p, γ), E=low; calculated astrophysical reaction rate.
doi: 10.1103/PhysRevC.73.034320
2006RU09 Phys.Rev.Lett. 96, 252501 (2006) C.Ruiz, A.Parikh, J.Jose, L.Buchmann, J.A.Caggiano, A.A.Chen, J.A.Clark, H.Crawford, B.Davids, J.M.D'Auria, C.Davis, C.Deibel, L.Erikson, L.Fogarty, D.Frekers, U.Greife, A.Hussein, D.A.Hutcheon, M.Huyse, C.Jewett, A.M.Laird, R.Lewis, P.Mumby-Croft, A.Olin, D.F.Ottewell, C.V.Ouellet, P.Parker, J.Pearson, G.Ruprecht, M.Trinczek, C.Vockenhuber, C.Wrede Measurement of the Ec.m. = 184 keV Resonance Strength in the 26gAl(p, γ)27Si Reaction NUCLEAR REACTIONS 1H(26Al, γ), E=5.122, 5.226, 5.850 MeV; measured Eγ, (recoil)γ-coin. 26Al(p, γ), E(cm) ≈ 184 keV; deduced resonance strength. Astrophysical implications discussed.
doi: 10.1103/PhysRevLett.96.252501
2005CH30 Nucl.Phys. A752, 510c (2005) A.A.Chen, R.E.Azuma, S.Bishop, L.Buchmann, M.L.Chatterjee, J.M.D'Auria, S.Engel, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, D.Hutcheon, C.C.Jewett, J.Jose, J.D.King, A.M.Laird, M.Lamey, R.Lewis, W.Liu, A.Olin, D.Ottewell, P.Parker, J.Rogers, C.Ruiz, M.Trinczek, C.Wrede The 21Na(p, γ)22Mg reaction in novae and x-ray bursts NUCLEAR REACTIONS 1H(21Na, γ), E(cm) ≈ 200-1100 keV; measured thick-target yield. 21Na(p, γ), E=low; deduced resonance parameters, astrophysical reaction rate.
doi: 10.1016/j.nuclphysa.2005.02.136
2005EN07 Nucl.Instrum.Methods Phys.Res. A 553, 491 (2005) S.Engel, D.Hutcheon, S.Bishop, L.Buchmann, J.Caggiano, M.L.Chatterjee, A.A.Chen, J.D'auria, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, C.C.Jewett, A.M.Laird, M.Lamey, W.Liu, A.Olin, D.Ottewell, J.Pearson, C.Ruiz, G.Ruprecht, M.Trinczek, C.Vockenhuber, C.Wrede Commissioning the DRAGON facility at ISAC NUCLEAR REACTIONS 20Ne(p, γ), 21Ne(p, γ), 24Mg(p, γ), E=214 keV-1.1 MeV; measured products, Eγ, Iγ; deduced resonance parameters. Data were imported from EXFOR entry C1403.
doi: 10.1016/j.nima.2005.07.029
2005FI01 Nucl.Phys. A748, 351 (2005) R.Fitzgerald, E.Abbotoy, D.W.Bardayan, J.C.Blackmon, A.E.Champagne, A.A.Chen, U.Greife, D.W.Hill, A.N.James, R.L.Kozub, T.A.Lewis, R.Livesay, Z.Ma, S.L.Mahan, J.W.McConnell, W.T.Milner, B.H.Moazen, P.D.Parker, D.E.Pierce, M.E.Roettger, L.Sahin, D.Shapira, M.S.Smith, F.Strieder, K.B.Swartz, J.S.Thomas, D.W.Visser Studies of (p, γ) reactions with the Daresbury Recoil Separator at ORNL'S HRIBF NUCLEAR REACTIONS 1H(17O, γ), E=12.5 MeV; measured particle spectra; deduced resonance strength. Recoil separator, other reactions discussed.
doi: 10.1016/j.nuclphysa.2004.09.155
2005RU01 Phys.Rev. C 71, 025802 (2005) C.Ruiz, T.Davinson, F.Sarazin, I.Roberts, A.Robinson, P.J.Woods, L.Buchmann, A.C.Shotter, P.Walden, N.M.Clarke, A.A.Chen, B.R.Fulton, D.Groombridge, J.Pearson, A.S.Murphy Multichannel R-matrix analysis of elastic and inelastic resonances in the 21Na + p compound system NUCLEAR REACTIONS 1H(21Na, p), E=580-1560 keV/nucleon; measured elastic and inelastic recoil proton spectra, σ(θ). 22Mg deduced resonance energies, widths, J, π, analog states. 21Na(p, γ), E=low; calculated reaction rate. R-matrix analysis.
doi: 10.1103/PhysRevC.71.025802
2005RU15 Nucl.Phys. A758, 166c (2005) C.Ruiz, M.Aliotta, R.E.Azuma, R.N.Boyd, L.Buchmann, A.Chen, N.M.Clarke, J.M.D'Auria, T.Davinson, B.R.Fulton, D.Groombridge, D.Hutcheon, A.M.Laird, A.S.Murphy, J.Pearson, I.Roberts, A.Robinson, F.Sarazin, A.C.Shotter, P.Walden, P.J.Woods Multichannel R-matrix analysis of elastic and inelastic resonances in the 20, 21Na+p compound systems NUCLEAR REACTIONS 1H(20Na, p), (21Na, p), E(cm) ≈ 500-1600 keV; measured recoil proton spectra; deduced excitation functions. 22Ne deduced resonance energies, widths.
doi: 10.1016/j.nuclphysa.2005.05.171
2005SV01 J.Phys.(London) G31, S1663 (2005) C.E.Svensson, P.Amaudruz, C.Andreoiu, A.Andreyev, R.A.E.Austin, G.C.Ball, D.Bandyopadhyay, A.J.Boston, R.S.Chakrawarthy, A.A.Chen, R.Churchman, T.E.Drake, P.Finlay, P.E.Garrett, G.F.Grinyer, G.Hackman, B.Hyland, B.Jones, R.Kanungo, R.Maharaj, J.P.Martin, D.Morris, A.C.Morton, C.J.Pearson, A.A.Phillips, J.J.Ressler, R.Roy, F.Sarazin, M.A.Schumaker, H.C.Scraggs, M.B.Smith, N.Starinsky, J.J.Valiente-Dobon, J.C.Waddington, L.M.Watters TIGRESS: TRIUMF-ISAC gamma-ray escape-suppressed spectrometer
doi: 10.1088/0954-3899/31/10/050
2005TR11 Nucl.Phys. A758, 729c (2005) M.Trinczek, C.C.Jewett, J.M.D'Auria, S.Bishop, L.Buchmann, A.A.Chen, S.Engel, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, D.Hutcheon, J.Jose, A.M.Laird, M.Lamey, R.Lewis, A.Olin, D.Ottewell, P.Parker, M.M.Pavan, J.E.Pearson, J.Rogers, C.Ruiz, C.Wrede Direct Measurement of the 21Na(p, γ)22Mg Reaction: Resonance Strengths and Gamma-Gamma Analysis NUCLEAR REACTIONS 1H(21Na, γ), E(cm)=200-1135 keV; measured Eγ, Iγ, γγ-coin. 22Mg deduced levels, J, π, resonance strengths.
doi: 10.1016/j.nuclphysa.2005.05.131
2004DA17 Phys.Rev. C 69, 065803 (2004) J.M.D'Auria, R.E.Azuma, S.Bishop, L.Buchmann, M.L.Chatterjee, A.A.Chen, S.Engel, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, D.Hutcheon, C.C.Jewett, J.Jose, J.D.King, A.M.Laird, M.Lamey, R.Lewis, W.Liu, A.Olin, D.Ottewell, P.Parker, J.Rogers, C.Ruiz, M.Trinczek, C.Wrede The 21Na(p, γ)22Mg reaction from Ec.m. = 200 to 1103 keV in novae and x-ray bursts NUCLEAR REACTIONS 1H(21Na, γ), E(cm)=200-1103 keV; measured Eγ, Iγ, (particle)γ-coin; deduced resonance energies and strengths. 21Na(p, γ), E=low; deduced astrophysical reaction rates.
doi: 10.1103/PhysRevC.69.065803
2004XU09 Nucl.Phys. A744, 347 (2004) X.-M.Xu, Y.Sun, A.-Q.Chen, L.Zheng Triple-gluon scatterings and early thermalization NUCLEAR REACTIONS 197Au(197Au, X), E(cm)=200 GeV/nucleon; calculated gluon momentum distributions.
doi: 10.1016/j.nuclphysa.2004.08.010
2003AZ05 Nucl.Phys. A718, 119c (2003) R.E.Azuma, S.Bishop, L.Buchmann, M.L.Chatterjee, A.A.Chen, J.M.D'Auria, T.Davinson, S.Engel, B.R.Fulton, D.Gigliotti, U.Greife, D.Groombridge, D.Hunter, A.Hussein, D.Hutcheon, C.Jewett, J.D.King, N.Khan, S.Kubono, A.M.Laird, M.Lamey, R.Lewis, L.Ling, W.Liu, S.Michimasa, A.S.Murphy, A.Olin, D.Ottewell, P.Parker, J.Pearson, I.Roberts, A.Robinson, J.G.Rogers, G.Roy, C.Ruiz, F.Sarazin, A.C.Shotter, H.Sprenger, F.Strieder, P.Walden, P.J.Woods, C.Wrede Results of 21Na + p Experiments at ISAC NUCLEAR REACTIONS 1H(21Na, 21Na), E=0.45-1.4 MeV; measured recoil proton spectra; deduced excitation function. 1H(21Na, γ), E=220, 855 keV/nucleon; measured Eγ, (particle)γ-coin. 22Mg deduced resonance features.
doi: 10.1016/S0375-9474(03)00688-2
2003BI03 Phys.Rev.Lett. 90, 162501 (2003); Erratum Phys.Rev.Lett. 90, 229902 (2003) S.Bishop, R.E.Azuma, L.Buchmann, A.A.Chen, M.L.Chatterjee, J.M.D'Auria, S.Engel, D.Gigliotti, U.Greife, M.Hernanz, D.Hunter, A.Hussein, D.Hutcheon, C.Jewett, J.Jose, J.King, S.Kubono, A.M.Laird, M.Lamey, R.Lewis, W.Liu, S.Michimasa, A.Olin, D.Ottewell, P.D.Parker, J.G.Rogers, F.Strieder, C.Wrede 21Na(p, γ)22Mg Reaction and Oxygen-Neon Novae NUCLEAR REACTIONS 1H(21Na, γ), E(cm) ≈ 202-223 keV; measured Eγ, (particle)γ-coin, thick-target yields; deduced resonance energy, width. 21Na(p, γ), E=low; deduced astrophysical reaction rate.
doi: 10.1103/PhysRevLett.90.162501
2003BI08 Nucl.Phys. A718, 263c (2003) S.Bishop, R.Azuma, L.Buchmann, A.A.Chen, M.L.Chatterjee, J.M.D'Auria, S.Engel, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, D.Hutcheon, C.Jewett, J.King, S.Kubono, M.Lamey, R.Lewis, W.Liu, S.Michimasa, A.Olin, D.Ottewell, P.D.Parker, J.Rogers, C.Wrede Nuclear Astrophysics Studies at DRAGON: The 21Na(p, γ)22Mg Reaction and Oxygen-Neon Novae NUCLEAR REACTIONS 1H(21Na, γ), E(cm) ≈ 202-224 keV; measured thick target yields. 21Na(p, γ), E=low; deduced astrophysical reaction rate. Recoil mass separator.
doi: 10.1016/S0375-9474(03)00726-7
2003BL11 Nucl.Phys. A718, 127c (2003) J.C.Blackmon, D.W.Bardayan, W.Bradfield-Smith, R.Brummitt, A.E.Champagne, A.A.Chen, T.Davinson, L.Dessieux, M.W.Guidry, K.I.Hahn, G.M.Hale, W.R.Hix, R.L.Kozub, Z.Ma, P.D.Parker, G.Rajbaidya, R.C.Runkle, C.M.Rowland, A.C.Shotter, M.S.Smith, L.A.Van Wormer, D.W.Visser, P.J.Woods The 14O(α, p)17F Reaction Rate NUCLEAR REACTIONS 1H(17F, 17F), (17F, 17F'), (17F, 14O), E(cm) ≈ 1-4 MeV; measured particle spectra. 17F(p, p'), E(cm)=2-2.5 MeV; deduced σ. 14O(α, p), E=low; deduced astrophysical reaction rate. R-matrix analysis.
doi: 10.1016/S0375-9474(03)00689-4
2003EN04 Nucl.Instrum.Methods Phys.Res. B204, 416 (2003) S.Engel, L.Buchmann, A.Chen, J.M.D'Auria, D.A.Hutcheon, C.S.Galovich, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, C.C.Jewett, W.Liu, A.Olin, D.Ottewell, J.Rogers Testing the ISAC radioactive ion accelerator beam specifications using the H(15N, αγ)12C reaction
doi: 10.1016/S0168-583X(02)02106-7
2003EN08 Nucl.Phys. A719, 107c (2003) S.Engel, S.Bishop, L.Buchmann, M.L.Chatterjee, A.Chen, J.M.D'Auria, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, R.Lewis, W.Liu, A.Olin, D.Ottewell, P.Parker, J.Rogers, F.Strieder, C.Wrede Measurements with DRAGON on resonances in the 21Na(p, γ)22Mg reaction with a radioactive ion beam NUCLEAR REACTIONS 1H(21Na, γ), E(cm) ≈ 204, 821 keV; measured yields. 21Na(p, γ), E(cm) ≈ 204, 821 keV; deduced resonance strengths.
doi: 10.1016/S0375-9474(03)00976-X
2003HU10 Nucl.Phys. A718, 515c (2003) D.A.Hutcheon, S.Bishop, L.Buchmann, M.L.Chatterjee, A.A.Chen, J.M.D'Auria, S.Engel, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, C.Jewett, N.Khan, A.Lamey, W.Liu, A.Olin, D.Ottewell, J.G.Rogers, G.Roy, H.Sprenger, C.Wrede The DRAGON facility for nuclear astrophysics at TRIUMF-ISAC NUCLEAR REACTIONS 1H(15N, α), E ≈ 412-452 keV/nucleon; measured resonance yield curve. 1H(21Na, γ), E=220 keV/nucleon; measured particle spectra, (particle)γ-coin.
doi: 10.1016/S0375-9474(03)00828-5
2003KU34 Nucl.Phys. A721, 817c (2003) C.-C.Kuo, S.-C.Kao, A.Chen, S.Uehara, W.-T.Chen, for the Belle Collaboration The studies of the γγ → p(p-bar) production by the Belle detector
doi: 10.1016/S0375-9474(03)01189-8
2003OL08 Nucl.Phys. A721, 1019c (2003) A.Olin, S.Bishop, L.Buchmann, M.L.Chatterjee, A.Chen, J.M.D'Auria, S.Engel, D.Gigliotti, U.Greife, D.Hunter, A.Hussein, D.Hutcheon, C.Jewett, J.King, S.Kubono, M.Lamey, A.M.Laird, R.Lewis, W.Liu, S.Michimasa, D.Ottewell, P.Parker, J.Rogers, F.Strieder, C.Wrede Nuclear Astrophysics at ISAC with DRAGON: Initial Studies NUCLEAR REACTIONS 1H(21Na, γ), E(cm) ≈ 212, 822 keV/nucleon; measured resonance excitation functions.
doi: 10.1016/S0375-9474(03)01275-2
2002EN06 Nucl.Phys. A701, 228c (2002) S.Engel, S.Bishop, A.Chen, C.Dale, J.M.D'Auria, U.Giesen, U.Greife, R.Henderson, D.Hunter, D.Hutcheon, R.Openshaw, J.Rogers, C.Rolfs, A.Shotter Development of Detection Systems for Low-Energy Heavy Ions at DRAGON
doi: 10.1016/S0375-9474(01)01580-9
2002HA15 Phys.Rev. C65, 035803 (2002) B.Harss, C.L.Jiang, K.E.Rehm, J.P.Schiffer, J.Caggiano, P.Collon, J.P.Greene, D.Henderson, A.Heinz, R.V.F.Janssens, J.Nolen, R.C.Pardo, T.Pennington, R.H.Siemssen, A.A.Sonzogni, J.Uusitalo, I.Wiedenhover, M.Paul, T.F.Wang, F.Borasi, R.E.Segel, J.C.Blackmon, M.Smith, A.Chen, P.Parker Widths of Astrophysically Important Resonances in 18Ne NUCLEAR REACTIONS 1H(17F, p), (17F, α), E(cm)=3.07-3.94 MeV; measured σ, σ(E, θ). 17F(p, p'), E(cm) ≈ 3.5 MeV; deduced σ(θ). 14O(α, p), E=low; deduced astrophysical reaction rates. 18Ne deduced resonance parameters.
doi: 10.1103/PhysRevC.65.035803
2002RU03 Phys.Rev. C65, 042801 (2002) C.Ruiz, F.Sarazin, L.Buchmann, T.Davinson, R.E.Azuma, A.A.Chen, B.R.Fulton, D.Groombridge, L.Ling, A.Murphy, J.Pearson, I.Roberts, A.Robinson, A.C.Shotter, P.Walden, P.J.Woods Strong Resonances in Elastic Scattering of Radioactive 21Na on Protons NUCLEAR REACTIONS 1H(21Na, 21Na'), E(cm)=0.45-1.4 MeV; measured σ(θ), recoil proton spectra. 22Mg deduced resonance features.
doi: 10.1103/PhysRevC.65.042801
2001BL06 Nucl.Phys. A688, 142c (2001) J.C.Blackmon, D.W.Bardayan, W.Bradfield-Smith, A.E.Champagne, A.A.Chen, T.Davinson, K.I.Hahn, R.L.Kozub, Z.Ma, P.D.Parker, G.Rajbaidya, R.C.Runkle, C.M.Rowland, A.C.Shotter, M.S.Smith, K.B.Swartz, D.W.Visser, P.J.Woods Determination of the 14O(α, p)17Fg.s. Reaction Rate bt Measurement of the 1H(17F, α)14O Cross Section NUCLEAR REACTIONS 1H(17F, α), (17F, p), E(cm)=2-4 MeV; measured σ(θ), reaction rates. 18Ne deduced resonance widths and strengths, comparison with calculations and earlier data.
doi: 10.1016/S0375-9474(01)00686-8
2001CH35 Phys.Rev. C63, 065807 (2001) A.A.Chen, R.Lewis, K.B.Swartz, D.W.Visser, P.D.Parker Structure of 22Mg and Its Implications for Explosive Nucleosynthesis NUCLEAR REACTIONS 12C(16O, 6He), E=90 MeV; measured particle spectra, σ(θ). 22Mg deduced levels, resonances. 18Ne(α, p), E not given; calculated stellar reaction rates.
doi: 10.1103/PhysRevC.63.065807
2001CH43 Nucl.Phys. A688, 146c (2001) A.A.Chen, R.Lewis, K.B.Swartz, D.W.Visser, P.D.Parker The Structure of 22Mg and Its Implications for Explosive Nucleosynthesis NUCLEAR REACTIONS 12C(16O, 6He), E=90 MeV; measured 6He excitation energy spectrum. 18Ne(α, p), E=low; calculated reaction rate at temperatures of astrophysical interest, comparison with previous calculations. 22Mg deduced levels energy.
doi: 10.1016/S0375-9474(01)00687-X
2000BB04 Phys.Rev. C62, 055804 (2000) D.W.Bardayan, J.C.Blackmon, C.R.Brune, A.E.Champagne, A.A.Chen, J.M.Cox, T.Davinson, V.Y.Hansper, M.A.Hofstee, B.A.Johnson, R.L.Kozub, Z.Ma, P.D.Parker, D.E.Pierce, M.T.Rabban, A.C.Shotter, M.S.Smith, K.B.Swartz, D.W.Visser, P.J.Woods The Astrophysically Important 3+ State in 18Ne and the 17F(p, γ)18Ne Stellar Rate NUCLEAR REACTIONS 1H(17F, 17F), (17F, p), E=9-12 MeV; measured recoil proton spectra, angular distributions, (proton)(fluorine)-coin. 18Ne; deduced resonance J, π. 17F(p, γ), E not given; calculated astrophysical reaction rates. 1H(17O, 17O), E=10.1, 12.2 MeV; measured proton angular distributions. Silicon detector array.
doi: 10.1103/PhysRevC.62.055804
1999BA49 Phys.Rev.Lett. 83, 45 (1999) D.W.Bardayan, J.C.Blackmon, C.R.Brune, A.E.Champagne, A.A.Chen, J.M.Cox, T.Davinson, V.Y.Hansper, M.A.Hofstee, B.A.Johnson, R.L.Kozub, Z.Ma, P.D.Parker, D.E.Pierce, M.T.Rabban, A.C.Shotter, M.S.Smith, K.B.Swartz, D.W.Visser, P.J.Woods Observation of the Astrophysically Important 3+ State in 18Ne via Elastic Scattering of a Radioactive 17F Beam from 1H NUCLEAR REACTIONS 1H(17F, 17F), E ≈ 10-12 MeV; measured proton yields, (proton)(fluorine)-coin. 18Ne deduced resonance energy, width. 17F(p, γ), E not given; calculated resonance contribution to proton capture rate. Astrophysical implications discussed.
doi: 10.1103/PhysRevLett.83.45
1999HA14 Phys.Rev.Lett. 82, 3964 (1999); Comment Phys.Rev.Lett. 84, 1635 (2000) B.Harss, J.P.Greene, D.Henderson, R.V.F.Janssens, C.L.Jiang, J.Nolen, R.C.Pardo, K.E.Rehm, J.P.Schiffer, R.H.Siemssen, A.A.Sonzogni, J.Uusitalo, I.Wiedenhover, M.Paul, T.F.Wang, F.Borasi, R.E.Segel, J.C.Blackmon, M.S.Smith, A.Chen, P.Parker Stellar Reactions with Short-Lived Nuclei: 17F(p, α)14O NUCLEAR REACTIONS 1H(17F, 14O), E(cm)=2.2-3.8 MeV; measured particle energies, (14O)α-coin, σ(E). 18Ne deduced resonance parameters. Implications for astrophysical processes discussed.
doi: 10.1103/PhysRevLett.82.3964
1999YI01 Phys.Rev. C60, 028801 (1999) K.O.Yildiz, N.P.T.Bateman, Y.M.Butt, A.A.Chen, K.B.Swartz, P.D.Parker Thick Target Yields of 26Alg.s. from the 16O(16O, x)26Alg.s. and 16O(14N, x)26Alg.s. Reactions NUCLEAR REACTIONS 16O(16O, X)26Al, E=80-150 MeV; 16O(14N, X)26Al, E=115 MeV; measured thick target yields; deduced production of 26Al in proto-solar nebula. Previous measurements included in analysis. Comparison with model predictions.
doi: 10.1103/PhysRevC.60.028801
1998BA19 Phys.Rev. C57, 2022 (1998) N.P.T.Bateman, D.W.Bardayan, Y.M.Butt, A.A.Chen, K.O.Yildiz, B.M.Young, P.D.Parker Thick Target Yield of 26Al from the 12C(16O, x)26Al(g.s.) Reaction NUCLEAR REACTIONS 12C(16O, X)26Al, E=45, 65, 140 MeV; measured thick target yield; deduced σ. Activation method.
doi: 10.1103/PhysRevC.57.2022
1998UT02 Phys.Rev. C57, 2731 (1998); Erratum Phys.Rev. C58, 1354 (1998) S.Utku, J.G.Ross, N.P.T.Bateman, D.W.Bardayan, A.A.Chen, J.Gorres, A.J.Howard, C.Iliadis, P.D.Parker, M.S.Smith, R.B.Vogelaar, M.Wiescher, K.Yildiz Breakout from the Hot CNO Cycle: The 18F(p, γ) vs 18F(p, α) branching ratio NUCLEAR REACTIONS 19F(3He, t), (3He, tα), (3He, pt), E=29.8 MeV; 16O(6Li, t), (6Li, 3He), E=32 MeV; measured particle spectra, tp-, tα-coin; deduced reaction rates for 18F + p. 19F deduced levels, resonance features. Astrophysical implications.
doi: 10.1103/PhysRevC.57.2731
1997BA51 Nucl.Phys. A621, 60c (1997) N.P.T.Bateman, D.W.Bardayan, Y.M.Butt, A.A.Chen, K.O.Yildiz, B.M.Young, P.D.Parker, A.E.Champagne The Production of 26Al in the Early Solar System by Oxygen Rich Cosmic Rays NUCLEAR REACTIONS 12C(16O, X)26Al, E=45, 65, 140 MeV; measured residual decay associated βγ(t); deduced residual yield, astrophysical consequences.
doi: 10.1016/S0375-9474(97)00213-3
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