NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = C.Wrede Found 73 matches. 2023SU03 Phys.Lett. B 839, 137801 (2023) L.J.Sun, C.Fry, B.Davids, N.Esker, C.Wrede, M.Alcorta, S.Bhattacharjee, M.Bowry, B.A.Brown, T.Budner, R.Caballero-Folch, L.Evitts, M.Friedman, A.B.Garnsworthy, B.E.Glassman, G.Hackman, J.Henderson, O.S.Kirsebom, J.Lighthall, P.Machule, J.Measures, M.Moukaddam, J.Park, C.Pearson, D.Perez-Loureiro, C.Ruiz, P.Ruotsalainen, J.Smallcombe, J.K.Smith, D.Southall, J.Surbrook, L.E.Weghorn, M.Williams First application of Markov chain Monte Carlo-based Bayesian data analysis to the Doppler-shift attenuation method NUCLEAR REACTIONS 3He(32S, α)31S, E=128 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, levels, T1/2, resonances. Comparison with the shell-model code NuShellX calculations. Modern Markov chain Monte Carlo-based Bayesian statistical techniques. The Doppler Shift Lifetimes (DSL2) facility at the TRIUMF Isotope Separator and Accelerator (ISAC-II) facility.
doi: 10.1016/j.physletb.2023.137801
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
2022SC17 J.Phys.(London) G49, 110502 (2022) H.Schatz, A.D.Becerril Reyes, A.Best, E.F.Brown, K.Chatziioannou, K.A.Chipps, C.M.Deibel, R.Ezzeddine, D.K.Galloway, C.J.Hansen, F.Herwig, A.P.Ji, M.Lugaro, Z.Meisel, D.Norman, J.S.Read, L.F.Roberts, A.Spyrou, I.Tews, F.X.Timmes, C.Travaglio, N.Vassh, C.Abia, P.Adsley, S.Agarwal, M.Aliotta, W.Aoki, A.Arcones, A.Aryan, A.Bandyopadhyay, A.Banu, D.W.Bardayan, J.Barnes, A.Bauswein, T.C.Beers, J.Bishop, T.Boztepe, B.Cote, M.E.Caplan, A.E.Champagne, J.A.Clark, M.Couder, A.Couture, S.E.de Mink, S.Debnath, R.J.deBoer, J.den Hartogh, P.Denissenkov, V.Dexheimer, I.Dillmann, J.E.Escher, M.A.Famiano, R.Farmer, R.Fisher, C.Frohlich, A.Frebel, C.Fryer, G.Fuller, A.K.Ganguly, S.Ghosh, B.K.Gibson, T.Gorda, K.N.Gourgouliatos, V.Graber, M.Gupta, W.C.Haxton, A.Heger, W.R.Hix, W.C.G.Ho, E.M.Holmbeck, A.A.Hood, S.Huth, G.Imbriani, R.G.Izzard, R.Jain, H.Jayatissa, Z.Johnston, T.Kajino, A.Kankainen, G.G.Kiss, A.Kwiatkowski, M.La Cognata, A.M.Laird, L.Lamia, P.Landry, E.Laplace, K.D.Launey, D.Leahy, G.Leckenby, A.Lennarz, B.Longfellow, A.E.Lovell, W.G.Lynch, S.M.Lyons, K.Maeda, E.Masha, C.Matei, J.Merc, B.Messer, F.Montes, A.Mukherjee, M.R.Mumpower, D.Neto, B.Nevins, W.G.Newton, L.Q.Nguyen, K.Nishikawa, N.Nishimura, F.M.Nunes, E.O'Connor, B.W.O'Shea, W.-J.Ong, S.D.Pain, M.A.Pajkos, M.Pignatari, R.G.Pizzone, V.M.Placco, T.Plewa, B.Pritychenko, A.Psaltis, D.Puentes, Y.-Z.Qian, D.Radice, D.Rapagnani, B.M.Rebeiro, R.Reifarth, A.L.Richard, N.Rijal, I.U.Roederer, J.S.Rojo, J.S K, Y.Saito, A.Schwenk, M.L.Sergi, R.S.Sidhu, A.Simon, T.Sivarani, A.Skuladottir, M.S.Smith, A.Spiridon, T.M.Sprouse, S.Starrfield, A.W.Steiner, F.Strieder, I.Sultana, R.Surman, T.Szucs, A.Tawfik, F.Thielemann, L.Trache, R.Trappitsch, M.B.Tsang, A.Tumino, S.Upadhyayula, J.O.Valle Martinez, M.Van der Swaelmen, C.Viscasillas Vazquez, A.Watts, B.Wehmeyer, M.Wiescher, C.Wrede, J.Yoon, R.G.T.Zegers, M.A.Zermane, M.Zingale, the Horizon 2020 Collaborations Horizons: nuclear astrophysics in the 2020s and beyond
doi: https://dx.doi.org/10.1088/1361-6471/ac8890
2021SU03 Phys.Rev. C 103, 014322 (2021) L.J.Sun, M.Friedman, T.Budner, D.Perez-Loureiro, E.Pollacco, C.Wrede, B.A.Brown, M.Cortesi, C.Fry, B.E.Glassman, J.Heideman, M.Janasik, A.Kruskie, A.Magilligan, M.Roosa, J.Stomps, J.Surbrook, P.Tiwari 25Si β+-decay spectroscopy RADIOACTIVITY 25Si(β+), (EC), (β+p)[from 9Be(36Ar, X), E=150 MeV/nucleon from the K500 and K1200 Coupled Cyclotron Facility at NSCL-MSU, followed by purification of 25Si beam by A1900 fragment separator]; measured Eγ, Iγ, γγ- and pγ-coin, E(p), I(p), half-life of 25Si decay using the Gaseous Detector with Germanium Tagging (GADGET) system of a proton detector and the SeGA array. 24Mg, 25Al; deduced levels, J, π, %Iβ+ feedings, %Iβp, γ branching ratios, logft, B(GT), Γγ/Γp and half-life for the 2673-keV level in 25Al, Γγ and Γγ/Γp for T=3/2 IAS in 25Al at 7902 keV. Comparison with shell-model calculations of levels, Jπ, β feedings, logft and B(GT) using USDC and USDI Hamiltonians, and with the experimental and theoretical decay characteristics of 25Na β- decay to 25Mg. Comparison with earlier experimental results.
doi: 10.1103/PhysRevC.103.014322
2021SU04 Phys.Rev. C 103, 014323 (2021) J.Surbrook, G.Bollen, M.Brodeur, A.Hamaker, D.Perez-Loureiro, D.Puentes, C.Nicoloff, M.Redshaw, R.Ringle, S.Schwarz, C.S.Sumithrarachchi, L.J.Sun, A.A.Valverde, A.C.C.Villari, C.Wrede, I.T.Yandow First Penning trap mass measurement of 36Ca ATOMIC MASSES 36Ca; measured masses of 36Ca+ and 36Ca2+ by the time-of-flight ion cyclotron resonance method using the LEBIT 9.4 T Penning-trap facility at NSCL-MSU; deduced mass excess and compared with AME2016 evaluation; interpreted result in the context of the isobaric multiplet mass equation (IMME) and a new ab initio derived calculation that extends the IMME with excellent agreement in the A=36, T=2 isobaric multiplet with the quadratic IMME, and only qualitative agreement with the generalized IMME (GIMME) predictions. Radioactive beam of 36Ca produced in 9Be(40Ca, X), E=140 MeV/nucleon at the Coupled Cyclotron Facility, followed by selection and purification by A1900 fragment separator.
doi: 10.1103/PhysRevC.103.014323
2020FR04 Phys.Rev. C 101, 052802 (2020) M.Friedman, T.Budner, D.Perez-Loureiro, E.Pollacco, C.Wrede, J.Jose, B.A.Brown, M.Cortesi, C.Fry, B.Glassman, J.Heideman, M.Janasik, M.Roosa, J.Stomps, J.Surbrook, P.Tiwari Low-energy 23Al β-delayed proton decay and 22Na destruction in novae RADIOACTIVITY 23Al(β+), (β+p)[from 9Be(36Ar, X), E=150 MeV/nucleon]; measured Ep, Ip, Eγ, Iγ, γp-coin, β-delayed proton branching ratios using the Gaseous Detector with Germanium Tagging (GADGET) detector at the NSCL-MSU facility. Comparison with previous experimental values of β-delayed proton branching ratios. NUCLEAR REACTIONS 22Na(p, γ), E(cm)=204 keV; deduced Γp/Γ and resonance strength for the 204-keV proton resonance (7.79-MeV, (7/2) state in 23Mg), and compared with previous experimental values.
doi: 10.1103/PhysRevC.101.052802
2020RI06 Phys.Rev. C 102, 025801 (2020) W.A.Richter, B.A.Brown, R.Longland, C.Wrede, P.Denissenkov, C.Fry, F.Herwig, D.Kurtulgil, M.Pignatari, R.Reifarth Shell-model studies of the astrophysical rp-process reactions 34S(p, γ)35Cl and 34g, mCl(p, γ)35Ar NUCLEAR REACTIONS 34S(3He, d)35Cl, E=20 MeV; calculated spectroscopic factors for levels in 35Cl up to 7.4 MeV using shell model, and compared with experimental values. 34S(p, γ)35Cl, 34,34mCl(p, γ)35Ar, E not given; calculated levels, resonances, J, π, spectroscopic factors, Γp, Γγ, resonance strengths, thermonuclear reaction rates; discussed impact on predicted 34S/32S isotopic ratio for presolar nova grains. Comparison with experimental data. Shell-model approach, with uncertainties estimated using a Monte Carlo method.
doi: 10.1103/PhysRevC.102.025801
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
2019GL02 Phys.Rev. C 99, 065801 (2019) B.E.Glassman, D.Perez-Loureiro, C.Wrede, J.Allen, D.W.Bardayan, M.B.Bennett, K.A.Chipps, M.Febbraro, M.Friedman, C.Fry, M.R.Hall, O.Hall, S.N.Liddick, P.O'Malley, W.-J.Ong, S.D.Pain, S.B.Schwartz, P.Shidling, H.Sims, L.J.Sun, P.Thompson, H.Zhang Doppler broadening in 20Mg(βpγ)19Ne decay RADIOACTIVITY 20Mg(β+p)[20Mg beam from 9Be(24Mg, X), E=170 MeV/nucleon, followed by separation using A1900 separator at NSCL-MSU]; measured Eβ+, Eγ, Iγ, β+γ-coin, γ-decay branching ratios, and E(p) using plastic scintillator for β detection and the SeGA array for γ detection. 19Ne; deduced levels, J, π, half-life of 1507.5 level from Doppler broadening analysis, β+p feedings. Comparison with previous experimental values. Discussed relevance to 15O(α, γ)19Ne thermonuclear reaction rates. NUCLEAR REACTIONS 9Be(24Mg, X)15N/16O/17F/18Ne/20Mg, E=170 MeV/nucleon; measured time of flight, particle identification plot, yields using A1900 fragment separator at the K500 and K1200 coupled cyclotrons of NSCL-MSU.
doi: 10.1103/PhysRevC.99.065801
2019PA21 Phys.Rev. C 99, 045807 (2019) S.N.Paneru, C.R.Brune, R.Giri, R.J.Livesay, U.Greife, J.C.Blackmon, D.W.Bardayan, K.A.Chipps, B.Davids, D.S.Connolly, K.Y.Chae, A.E.Champagne, C.Deibel, K.L.Jones, M.S.Johnson, R.L.Kozub, Z.Ma, C.D.Nesaraja, S.D.Pain, F.Sarazin, J.F.Shriner, D.W.Stracener, M.S.Smith, J.S.Thomas, D.W.Visser, C.Wrede s-wave scattering lengths for the 7Be + p system from an R-matrix analysis NUCLEAR REACTIONS 1H(7Be, 7Be), (7Be, 7Be'), E=4-27 MeV; 12C(7Be, 7Be), E=7, 14 meV; measured scattered ions, differential σ(θ) using (CH2)n target and segmented Silicon Detector Array (SIDAR) for scattered ion detection at ORNL-HRIBF; deduced s-wave scattering lengths, R-matrix analysis of elastic and inelastic scattering data; analyzed cross-section data from Louvain-la-Neuve reported in 2003An06 reference. Comparison with previous experimental values, and optical model calculations. Relevance to astrophysical S factor for 7Be(p, γ) reaction. 8B; verified levels at 1.9, 2.21 and 9.0 MeV.
doi: 10.1103/PhysRevC.99.045807
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
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
2018GL01 Phys.Lett. B 778, 397 (2018) B.E.Glassman, D.Perez-Loureiro, C.Wrede, J.Allen, D.W.Bardayan, M.B.Bennett, B.A.Brown, K.A.Chipps, M.Febbraro, M.Friedman, C.Fry, M.R.Hall, O.Hall, S.N.Liddick, P.O'Malley, W.J.Ong, S.D.Pain, C.Prokop, S.B.Schwartz, P.Shidling, H.Sims, P.Thompson, H.Zhang β-delayed γ decay of 20Mg and the 19Ne(p, γ)20Na breakout reaction in Type I X-ray bursts RADIOACTIVITY 20Mg(β+) [from 9Be(24Mg, X)20Mg, E=170 MeV/nucleon]; measured decay products, Eβ, Iβ, Eγ, Iγ; deduced γ-ray energies and limits on intensities of β-delayed γ-rays, Gamow-Teller strengths B(GT) and associated log ft values. Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2018.01.041
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
2017TR04 Phys.Rev. C 95, 035501 (2017) S.Triambak, L.Phuthu, A.Garcia, G.C.Harper, J.N.Orce, D.A.Short, S.P.R.Steininger, A.Diaz Varela, R.Dunlop, D.S.Jamieson, W.A.Richter, G.C.Ball, P.E.Garrett, C.E.Svensson, C.Wrede 2+1 to 3+1 γ width in 22Na and second class currents NUCLEAR REACTIONS 21Ne(p, γ)22Na, E=908, 1113 keV; measured Eγ, Iγ, γγ-coin using implanted 21Ne target, two HPGe detectors and a NaI(Tl) detector at CENPA FN tandem accelerator of University of Washington. 22Na; deduced levels, precise width of first 2+ state with T=1 to T=0 3+ ground state transition, weak magnetism form factor for 22Na β decay using the conserved vector current (CVC) hypothesis, and large induced-tensor form factor for the decay by using previous βγ(θ) results. Comparison with theoretical predictions.
doi: 10.1103/PhysRevC.95.035501
2017WR02 Phys.Rev. C 96, 032801 (2017) C.Wrede, B.E.Glassman, D.Perez-Loureiro, J.M.Allen, D.W.Bardayan, M.B.Bennett, B.A.Brown, K.A.Chipps, M.Febbraro, C.Fry, M.R.Hall, O.Hall, S.N.Liddick, P.O'Malley, W.-J.Ong, S.D.Pain, S.B.Schwartz, P.Shidling, H.Sims, P.Thompson, H.Zhang New portal to the 15O(α, γ)19Ne resonance triggering CNO-cycle breakout RADIOACTIVITY 20Mg(β+), (β+p)[from 9Be(24Mg, X), E=170 MeV/nucleon using A1900 separator at MSU-NSCL facility]; measured Eγ, Iγ, βγ- and (implants)γ-coin using SeGA array for γ detection. 19Ne; deduced level at 4034 keV, β+-delayed proton branching ratio; discussed possible α-decay of 4034 level. 20Mg(β+α); discussed possible decay branch. Relevance to hot CNO cycles during type I x-ray bursts on accreting neutron stars.
doi: 10.1103/PhysRevC.96.032801
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
2016KI03 Phys.Rev. C 93, 025802 (2016) O.S.Kirsebom, P.Bender, A.Cheeseman, G.Christian, R.Churchman, D.S.Cross, B.Davids, L.J.Evitts, J.Fallis, N.Galinski, A.B.Garnsworthy, G.Hackman, J.Lighthall, S.Ketelhut, P.Machule, D.Miller, S.T.Nielsen, C.R.Nobs, C.J.Pearson, M.M.Rajabali, A.J.Radich, A.Rojas, C.Ruiz, A.Sanetullaev, C.D.Unsworth, C.Wrede Measurement of lifetimes in 23MG NUCLEAR REACTIONS 3He(24Mg, α), E=3.125 MeV/nucleon; measured Eα, Iα, Eγ, Iγ, αγ-coincidence, level half-lives by DSAM and line-shape analysis. Experiment performed at ISAC-II-TRIUMF. Monte-Carlo simulations. 23Mg; deduced levels, resonances, resonance strengths. Relevance to 22Na(p, γ)23Mg reaction in classical novae. Comparison with previous measurements of level half-lives.
doi: 10.1103/PhysRevC.93.025802
2016PA41 Eur.Phys.J.Plus 131, 345 (2016) Toward concordance of Ex and Jπ values for proton unbound 31S states NUCLEAR REACTIONS 31P(3He, t), 32S(d, t), E=20, 22 MeV; analyzed available data; deduced σ(θ), energy levels, J, π.
doi: 10.1140/epjp/i2016-16345-6
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
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
2015GL03 Phys.Rev. C 92, 042501 (2015) B.E.Glassman, D.Perez-Loureiro, C.Wrede, J.Allen, D.W.Bardayan, M.B.Bennett, B.A.Brown, K.A.Chipps, M.Febbraro, C.Fry, M.R.Hall, O.Hall, S.N.Liddick, P.O'Malley, W.Ong, S.D.Pain, S.B.Schwartz, P.Shidling, H.Sims, P.Thompson, H.Zhang Revalidation of the isobaric multiplet mass equation for the A=20 quintet RADIOACTIVITY 20Mg(β+)[20Mg beam from 9Be(24Mg, X), E=170 MeV/nucleon using A1900 fragment separator at NSCL-MSU]; measured Eγ, Iγ, βγ-coin using SeGA array. 20Na; deduced levels, precise energy of the T=2 state, J, π. 20Mg, 20Na, 20Ne, 20F, 20O; analyzed and revalidated isobaric multiplet mass equation (IMME) for A=20, T=2 quintet.
doi: 10.1103/PhysRevC.92.042501
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
2014BR10 Phys.Rev. C 89, 062801 (2014);Erratum Phys.Rev. C 92, 069901 (2015) B.A.Brown, W.A.Richter, C.Wrede Shell-model studies of the astrophysical rapid-proton-capture reaction 30P(p, γ)31S NUCLEAR STRUCTURE 31S; calculated levels above 5.9 MeV, J, π, proton widths, spectroscopic factors. Comparison with experimental and evaluated data. NUCLEAR REACTIONS 30P(p, γ)31S, T=0.1-1 GK; calculated thermonuclear reaction rates for negative and positive parity final states. Comparison with other calculations. Discussed large uncertainties in calculating the reaction rate due to non-observation of predicted 1/2- states in astrophysically significant resonance region.
doi: 10.1103/PhysRevC.89.062801
2014GA01 Hyperfine Interactions 223, 201 (2014) A.Garcia, S.Sjue, E.Swanson, C.Wrede, D.Melconian, A.Algora, I.Ahmad Decay studies for neutrino physics RADIOACTIVITY 100Tc, 116In(β-); measured decay products, Eβ, Iβ, X-rays; deduced branching ratios. Comparison with available data.
doi: 10.1007/s10751-012-0619-2
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
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
2013WR01 Phys.Rev. C 87, 031303 (2013) C.Wrede, S.K.L.Sjue, A.Garcia, H.E.Swanson, I.Ahmad, A.Algora, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, M.Reponen, J.Rissanen, A.Saastamoinen, J.Aysto Electron capture on 116In and implications for nuclear structure related to double-β decay RADIOACTIVITY 116In(EC)[from 115In(d, p), E=7.6 MeV]; measured γ, β, x-ray spectra, β(x ray)-coin using JYFLTRAP at IGISOL facility in Jyvaskyla; deduced EC decay branch, B(GT). Implications for 2νββ and 0νββ decay modes of 116Cd.
doi: 10.1103/PhysRevC.87.031303
2012KN01 Phys.Rev.Lett. 108, 122502 (2012) A.Knecht, R.Hong, D.W.Zumwalt, B.G.Delbridge, A.Garcia, P.Muller, H.E.Swanson, I.S.Towner, S.Utsuno, W.Williams, C.Wrede Precision Measurement of the 6He Half-Life and the Weak Axial Current in Nuclei RADIOACTIVITY 6He(β-) [from 7Li(d, 3He)6He, E=5.8 MeV]; measured decay products, Eβ, Iβ; deduced T1/2, log ft, Gamow-Teller matrix element. Comparison with ab initio calculations.
doi: 10.1103/PhysRevLett.108.122502
2012KN02 Phys.Rev. C 86, 035506 (2012) A.Knecht, R.Hong, D.W.Zumwalt, B.G.Delbridge, A.Garcia, P.Muller, H.E.Swanson, I.S.Towner, S.Utsuno, W.Williams, C.Wrede Precision measurement of the 6He half-life and the weak axial current in nuclei RADIOACTIVITY 6He[from 7Li(d, 3He), E=18 MeV](β-); measured Iβ, ββ-coin, T1/2; deduced ft value, Gamow-Teller matrix element. Comparison with ab-initio calculations, and with previous half-life measurements.
doi: 10.1103/PhysRevC.86.035506
2012WR02 Phys.Rev. C 86, 047305 (2012) C.Wrede, A.Garcia, D.Melconian, S.Triambak, B.A.Brown γ-ray constraints on the properties of unbound 32Cl levels NUCLEAR STRUCTURE 32Cl; analyzed unbound levels, J, π, and proton branching ratios available from 32S(3He, t) and 32Ar β+ decay data. Effect on thermonuclear rate of the 31S(p, γ)32Cl reaction.
doi: 10.1103/PhysRevC.86.047305
2011FA10 Phys.Rev. C 84, 045807 (2011) J.Fallis, J.A.Clark, K.S.Sharma, G.Savard, F.Buchinger, S.Caldwell, A.Chaudhuri, J.E.Crawford, C.M.Deibel, S.Gulick, A.A.Hecht, D.Lascar, J.K.P.Lee, A.F.Levand, G.Li, B.F.Lundgren, A.Parikh, S.Russell, M.Scholte-van de Vorst, N.D.Scielzo, R.E.Segel, H.Sharma, S.Sinha, M.G.Sternberg, T.Sun, I.Tanihata, J.Van Schelt, J.C.Wang, Y.Wang, C.Wrede, Z.Zhou Mass measurements of isotopes of Nb, Mo, Tc, Ru, and Rh along the Νp- and rp-process paths using the Canadian Penning trap mass spectrometer ATOMIC MASSES 87Nb, 87,90,91,92Mo, 90,91,92,93Tc, 90,91,92,93,94Ru, 92,93,94,95Rh; measured cyclotron frequency ratios using Canadian Penning trap mass spectrometer; deduced mass excesses. 88Tc; deduced S(p). Comparison with previous measurements and AME-2003. Z=42-47, A=87-96; analyzed systematics of S(2p) values. Z=42-45, N=45-52; analyzed systematics of S(2n) values. Z=42-45, A=87-95; analyzed systematics of S(p) values. 94mAg; discussed 2p decay mode of 21+ isomer. NUCLEAR REACTIONS 58Ni(40Ca, X)87Nb/87Mo/90Mo/92Mo/90Tc/90Tc/92Tc/93Tc/90Ru/91Ru/92Ru/93Ru/92Rh/93Rh/94Rh, E=185, 190, 200 MeV; 58Ni(36Ar, X)91Tc/91Ru, E=125 MeV; Ni(36Ar, X)90Mo/91Mo/90Tc/91Tc/92Tc/91Ru/92Ru, E=130, 150 MeV; Ni(40Ca, X)93Tc/93Ru/94Ru/94Rh/95Rh, E=170 MeV; measured yields at ATLAS facility.
doi: 10.1103/PhysRevC.84.045807
2011FR04 Phys.Rev. C 83, 048801 (2011) B.M.Freeman, C.Wrede, B.G.Delbridge, A.Garca, A.Knecht, A.Parikh, A.L.Sallaska Branches of 33S( p, γ )34Cl at oxygen-neon nova temperatures NUCLEAR REACTIONS 33S(p, γ), E=200-710 keV; measured Eγ, Iγ for 432-, 492-, and 529-keV resonances. Deduced stellar reaction rates. Production of sulfur isotopes and 34mCl in novae.
doi: 10.1103/PhysRevC.83.048801
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
2011SA12 Phys.Rev. C 83, 034611 (2011) A.L.Sallaska, C.Wrede, A.Garcia, D.W.Storm, T.A.D.Brown, C.Ruiz, K.A.Snover, D.F.Ottewell, L.Buchmann, C.Vockenhuber, D.A.Hutcheon, J.A.Caggiano, J.Jose Absolute determination of the 22Na( p, γ )23Mg reaction rate in novae NUCLEAR REACTIONS 22Na(p, γ), E=150-700 keV; measured Eγ, Iγ; deduced absolute yields, excitation functions for resonances, resonance strengths and thermonuclear reaction rates. 23Mg; deduced levels, J, π, branching ratios, resonances. Estimated flux of 22Na gamma rays from novae.
doi: 10.1103/PhysRevC.83.034611
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
2010SA26 Phys.Rev.Lett. 105, 152501 (2010) A.L.Sallaska, C.Wrede, A.Garcia, D.W.Storm, T.A.D.Brown, C.Ruiz, K.A.Snover, D.F.Ottewell, L.Buchmann, C.Vockenhuber, D.A.Hutcheon, J.A.Caggiano Direct Measurements of 22Na(p, γ)23Mg Resonances and Consequences for 22Na Production in Classical Novae NUCLEAR REACTIONS 22Na(p, γ), E not given; measured Eγ, Iγ; deduced proton resonances energies and strengths, σ, reaction rates.
doi: 10.1103/PhysRevLett.105.152501
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
2009DE33 Phys.Rev. C 80, 035806 (2009) C.M.Deibel, J.A.Clark, R.Lewis, A.Parikh, P.D.Parker, C.Wrede Toward an experimentally determined 26Alm(p, γ)27Si reaction rate in ONe novae NUCLEAR REACTIONS 27Al(3He, t), E=25 MeV; 28Si(3He, α), E=17.5 MeV; measured Et, It, Eα, Iα, Ep, Ip, αp-coin, αp(θ). 27Si; deduced levels, angular momentum transfer, proton branching ratios from resonances. 26Al; deduced levels and feedings from proton decay of unbound states in 27Si. Deduced reaction rates for 26mAl(p, γ) reaction as a function of stellar temperature.
doi: 10.1103/PhysRevC.80.035806
2009KA06 Phys.Rev. C 79, 021301 (2009) B.P.Kay, J.P.Schiffer, S.J.Freeman, T.Adachi, J.A.Clark, C.M.Deibel, H.Fujita, Y.Fujita, P.Grabmayr, K.Hatanaka, D.Ishikawa, H.Matsubara, Y.Meada, H.Okamura, K.E.Rehm, Y.Sakemi, Y.Shimizu, H.Shimoda, K.Suda, Y.Tameshige, A.Tamii, C.Wrede Nuclear structure relevant to neutrinoless double β decay: The valence protons in 76Ge and 76Se NUCLEAR REACTIONS 74,76Ge, 76,78Se(d, 3He), (polarized d, 3He), E=80 MeV; measured 3He spectra, σ, angular distributions, vector analyzing powers. 74,76Ge, 76,78Se(3He, d), E=72 MeV; measured deuteron spectra, σ, angular distributions. 73,75Ga, 75,77As, 77,79Br; deduced levels, J, π, angular momentum transfers, spectroscopic factors. Comparison of angular distribution and polarization data with distorted wave Born approximation (DWBA) calculations. 76Ge, 76Se; deduced occupancies of valence proton orbitals in ground states. Comparison of occupancies of valence proton and neutron orbitals in ground states of 76Ge and 76Se with QRPA and shell-model calculations. Discussed implications for neutrinoless double β decay of 76Ge to 76Se.
doi: 10.1103/PhysRevC.79.021301
2009WR01 Phys.Rev. C 79, 035803 (2009) Thermonuclear 25Al(p, γ)26Si reaction rate in classical novae and Galactic 26Al NUCLEAR REACTIONS 25Al(p, γ); analyzed thermonuclear reaction rates. 26Si; deduced level, resonance, J, π. Discussed implications for nova contribution to galactic 26Al.
doi: 10.1103/PhysRevC.79.035803
2009WR02 Phys.Rev. C 79, 045803 (2009) C.Wrede, J.A.Caggiano, J.A.Clark, C.M.Deibel, A.Parikh, P.D.Parker Measurements of 31S energy levels and reevaluation of the thermonuclear resonant 30P(p, γ)31S reaction rate NUCLEAR REACTIONS 31P(3He, t)31S, E=20, 25 MeV; 31P(3He, t)31S, E=20 MeV; 32S(d, t)31S, E=25 MeV; measured (particle)(particle)-coin, proton branching ratios, tp(θ). 31S; deduced levels, J, π. 30P(p, γ)31S; deduced spectroscopic factors, widths and reaction rates. Comparison with Hauser-Feshbach statistical model estimates.
doi: 10.1103/PhysRevC.79.045803
2009WR03 Phys.Rev. C 79, 045808 (2009); Erratum Phys.Rev. C 80, 019904 (2009) C.Wrede, J.A.Caggiano, J.A.Clark, C.M.Deibel, A.Parikh, P.D.Parker Thermonuclear 30S(p, γ)31Cl reaction in type 1 X-ray bursts NUCLEAR REACTIONS 30S(p, γ); analyzed reaction rates and resonance parameters. 31Cl; deduced mass excess, reaction Q-value, onset temperatures for equilibrium and waiting point. Type I x-ray bursts.
doi: 10.1103/PhysRevC.79.045808
2008FA11 Phys.Rev. C 78, 022801 (2008) J.Fallis, J.A.Clark, K.S.Sharma, G.Savard, F.Buchinger, S.Caldwell, J.E.Crawford, C.M.Deibel, J.L.Fisker, S.Gulick, A.A.Hecht, D.Lascar, J.K.P.Lee, A.F.Levand, G.Li, B.F.Lundgren, A.Parikh, S.Russell, M.Scholte-van de Vorst, N.D.Scielzo, R.E.Segel, H.Sharma, S.Sinha, M.Sternberg, T.Sun, I.Tanihata, J.Van Schelt, J.C.Wang, Y.Wang, C.Wrede, Z.Zhou Determination of the proton separation energy of 93Rh from mass measurements ATOMIC MASSES 92Ru, 93Rh; measured masses; deduced mass excesses, proton separation energies. Penning trap method.
doi: 10.1103/PhysRevC.78.022801
2008KA01 Phys.Lett. B 658, 216 (2008) B.P.Kay, S.J.Freeman, J.P.Schiffer, J.A.Clark, C.Deibel, A.Heinz, A.Parikh, C.Wrede High-j single-particle neutron states outside the N = 82 core NUCLEAR REACTIONS 138Ba, 140Ce, 142Nd, 144Sm(α, 3He), E=51 MeV; measured σ(θ), excitation energy spectra; deduced spectroscopic factor and single-neutron energies.
doi: 10.1016/j.physletb.2007.11.033
2008SC03 Phys.Rev.Lett. 100, 112501 (2008) J.P.Schiffer, S.J.Freeman, J.A.Clark, C.Deibel, C.R.Fitzpatrick, S.Gros, A.Heinz, D.Hirata, C.L.Jiang, B.P.Kay, A.Parikh, P.D.Parker, K.E.Rehm, A.C.C.Villari, V.Werner, C.Wrede Nuclear Structure Relevant to Neutrinoless Double β Decay: 76Ge and 76Se NUCLEAR REACTIONS 74,76Ge, 76,78Se(d, p), E=15 MeV; 76Ge, 76Se(p, d), E=23 MeV; 74,76Ge, 76,78Se(3He, α), E=26 MeV; 74,76Ge, 76,78Se(α, 3He), E=40 MeV; measured reaction products energy spectra, cross sections. Deduced summed spectroscopic strengths, neutron vacancies.
doi: 10.1103/PhysRevLett.100.112501
2008VI06 Phys.Rev. C 78, 028802 (2008) D.W.Visser, C.Wrede, J.A.Caggiano, J.A.Clark, C.M.Deibel, R.Lewis, A.Parikh, P.D.Parker Addendum to "Measurement of 23Mg(p, γ)24Al resonance energies" NUCLEAR REACTIONS 23Mg(p, γ), E not given; analyzed resonance energies. 24Al; deduced levels, J, resonances.
doi: 10.1103/PhysRevC.78.028802
2007FR10 Phys.Rev. C 75, 051301 (2007) S.J.Freeman, J.P.Schiffer, A.C.C.Villari, J.A.Clark, C.Deibel, S.Gros, A.Heinz, D.Hirata, C.L.Jiang, B.P.Kay, A.Parikh, P.D.Parker, J.Qian, K.E.Rehm, X.D.Tang, V.Werner, C.Wrede Pair correlations in nuclei involved in neutrinoless double Β decay: 76Ge and 76Se NUCLEAR REACTIONS 74,76Ge, 76,78Se(p, t), E=23 MeV; measured yields, cross sections and angular distributions. Compared results to DWBA calculations.
doi: 10.1103/PhysRevC.75.051301
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
2007UG01 Phys.Rev. C 76, 025802 (2007) C.Ugalde, A.E.Champagne, S.Daigle, C.Iliadis, R.Longland, J.R.Newton, E.Osenbaugh-Stewart, J.A.Clark, C.Deibel, A.Parikh, P.D.Parker, C.Wrede Experimental evidence for a natural parity state in 26Mg and its impact on the production of neutrons for the s process NUCLEAR REACTIONS 22Ne(6Li, d), E=30 MeV; measured deuteron energy spectra. 26Mg deduced level energies.
doi: 10.1103/PhysRevC.76.025802
2007VI16 Phys.Rev. C 76, 065803 (2007) D.W.Visser, C.Wrede, J.A.Caggiano, J.A.Clark, C.Deibel, R.Lewis, A.Parikh, P.D.Parker Measurement of 23Mg(p, γ)24Al resonance energies NUCLEAR REACTIONS 24Mg(3He, t), E=30 MeV/nucleon; measured triton spectra, angular distributions. 24Al; deduced resonance energies, reaction rates. 23Mg(p, γ)24Al; resonance parameters.
doi: 10.1103/PhysRevC.76.065803
2007WR01 Phys.Rev. C 76, 052802 (2007) C.Wrede, J.A.Caggiano, J.A.Clark, C.Deibel, A.Parikh, P.D.Parker New 30P(p, γ)31S resonances and oxygen-neon nova nucleosynthesis NUCLEAR REACTIONS 31P(3He, t), E=20 MeV; measured charged particle spectra, angular distributions; 31S; deduced resonance energies, levels, J, π, 30P(p, γ) reaction rates, width parameters, spectroscopic factors. Comparison with 31P level scheme.
doi: 10.1103/PhysRevC.76.052802
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
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
2005PA31 Phys.Rev. C 71, 055804 (2005) A.Parikh, J.A.Caggiano, C.Deibel, J.P.Greene, R.Lewis, P.D.Parker, C.Wrede Mass measurements of 22Mg and 26Si via the 24Mg(p, t)22Mg and 28Si(p, t)26Si reactions NUCLEAR REACTIONS 24Mg, 28Si(p, t), E=33 MeV; measured triton spectra; deduced reaction Q-values. 22Mg, 26Si deduced mass excesses.
doi: 10.1103/PhysRevC.71.055804
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
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
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
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
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