NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = M.Wiescher Found 309 matches. Showing 1 to 100. [Next]2024DE04 Phys.Rev.Lett. 132, 062702 (2024) R.J.deBoer, M.Febbraro, D.W.Bardayan, C.Boomershine, K.Brandenburg, C.Brune, S.Coil, M.Couder, J.Derkin, S.Dede, R.Fang, A.Fritsch, A.Gula, Gy.Gyurky, B.Hackett, G.Hamad, Y.Jones-Alberty, R.Kelmar, K.Manukyan, M.Matney, J.McDonaugh, Z.Meisel, S.Moylan, J.Nattress, D.Odell, P.O'Malley, M.W.Paris, D.Robertson, Shahina, N.Singh, K.Smith, M.S.Smith, E.Stech, W.Tan, M.Wiescher Measurement of the 13C(α, n0)16O Differential Cross Section from 0.8 to 6.5 MeV NUCLEAR REACTIONS 13C(α, n), E=0.8-6.5 MeV; measured reaction products, En, IN; deduced σ(θ), σ, S-factor. Comparison with available data, R-matrix results from ENDF/B-VIII.0 library. The Oak Ridge National Laboratory Deuterated Spectroscopic Array (ODeSA), 5 MV Stable ion Accelerator for Nuclear Astrophysics, the University of Notre Dame Nuclear Science Laboratory.
doi: 10.1103/PhysRevLett.132.062702
2023BO19 Phys.Rev. C 108, 035809 (2023) T.C.Borgwardt, R.J.deBoer, A.Boeltzig, M.Couder, J.Gorres, Au.Gula, M.Hanhardt, K.V.Manukyan, T.Kadlecek, D.Robertson, F.Strieder, M.Wiescher Deep underground measurement of 11B(α, n)14N
doi: 10.1103/PhysRevC.108.035809
2023BR13 Phys.Rev. C 108, L061601 (2023) K.Brandenburg, G.Hamad, Z.Meisel, C.R.Brune, D.E.Carter, R.J.deBoer, J.Derkin, C.Feathers, D.C.Ingram, Y.Jones-Alberty, B.Kenady, T.N.Massey, M.Saxena, D.Soltesz, S.K.Subedi, A.V.Voinov, J.Warren, M.Wiescher Measurements of the 13C(α, n)16O cross section up to Eα=8 MeV
doi: 10.1103/PhysRevC.108.L061601
2023GU04 Phys.Rev. C 107, 025805 (2023) A.Gula, R.J.deBoer, S.Aguilar, J.Arroyo, C.Boomershine, B.Frentz, J.Gorres, S.Henderson, R.Kelmar, S.McGuinness, K.V.Manukyan, S.Moylan, D.Robertson, C.Seymour, Shahina, E.Stech, W.Tan, J.Wilkinson, M.Wiescher 10B + α reactions at low energies NUCLEAR REACTIONS 10B(α, p), (α, d), E(cm)=186-1430 keV; measured Ep, Ip, deuteron spectrum; deduced σ(θ) for (α, p0), (α, p1), (α, p2), (α, p3) and (α, d) channels, resonances, astrophysical reaction rate (T=0.01-2 GK), S-factor. 10B(α, α), (α, n), (α, p), (α, d); analyzed present and previous experimental data for σ(θ) distributions by R-matrix formalism using AZURE2 code. 10B(α, n), E(cm)=0.21-1.42 MeV; deduced astrophysical reaction rate (T=0.01-2 GK). 14N; deduced resonances, J, π, decay widths. Comparison to previous experimental data. Target surrounded by 2 silicon surface barrier detectors (SSBD) detectors at Stable ion Accelerator for Nuclear Astrophysics (Univ. Notre Dame).
doi: 10.1103/PhysRevC.107.025805
2023KE11 Phys.Rev. C 108, 035805 (2023) K-U.Kettner, H.W.Becker, C.R.Brune, R.J.deBoer, J.Gorres, D.Odell, D.Rogalla, M.Wiescher Absolute cross section of the 12C(p, γ)13N reaction
doi: 10.1103/PhysRevC.108.035805
2023SC08 Phys.Rev. C 107, 065806 (2023) P.Scholz, R.J.deBoer, J.Gorres, A.Gula, R.Kelmar, K.Manukyan, E.Stech, W.Tan, M.Wiescher Measurement of 39K(p, γ)40Ca resonance strengths below 900 keV for nucleosynthesis in classical novae NUCLEAR REACTIONS 39K(p, γ)40Ca, E=0.4, 1.4 MeV; measured Eγ, Iγ; deduced resonance strengths, astrophysical reaction rate (T=0.1-1.1 GK). 39K; lifetime under novae conditions. Comparison to previous experimental data and statistical model predictions (SAPPHIRE and NON-SMOKER codes). Single coaxial HPGe detector surrounded by BGO anti-Compton shield at 5U Pelletron accelerator of the Nuclear Science Laboratory (University of Notre Dame).
doi: 10.1103/PhysRevC.107.065806
2023WA05 Phys.Rev.Lett. 130, 092701 (2023) L.H.Wang, J.Su, Y.P.Shen, J.J.He, M.Lugaro, B.Szanyi, A.I.Karakas, L.Y.Zhang, X.Y.Li, B.Guo, G.Lian, Z.H.Li, Y.B.Wang, L.H.Chen, B.Q.Cui, X.D.Tang, B.S.Gao, Q.Wu, L.T.Sun, S.Wang, Y.D.Sheng, Y.J.Chen, H.Zhang, Z.M.Li, L.Y.Song, X.Z.Jiang, W.Nan, W.K.Nan, L.Zhang, F.Q.Cao, T.Y.Jiao, L.H.Ru, J.P.Cheng, M.Wiescher, W.P.Liu Measurement of the 18O(α, γ)22Ne Reaction Rate at JUNA and Its Impact on Probing the Origin of SiC Grains NUCLEAR REACTIONS 18O(α, γ), E=470-787 keV; measured reaction products, Eγ, Iγ; deduced thick target yields, resonance energies and resonance strengths, total reaction rates. Comparison with available data. The Jinping Underground Nuclear Astrophysics experimental facility (JUNA).
doi: 10.1103/PhysRevLett.130.092701
2023WI01 Eur.Phys.J. A 59, 11 (2023) M.Wiescher, R.J.deBoer, J.Gorres The resonances in the 22Ne+α fusion reactions NUCLEAR REACTIONS 22Ne(α, n), (α, γ), E(cm)<4.5 MeV; analyzed available data; deduced σ, resonance parameters, S-factor using AZURE2 and SAPPHIRE, HF calculations. α-cluster and single-particle structure of the compound nucleus.
doi: 10.1140/epja/s10050-023-00917-9
2022AL01 J.Phys.(London) G49, 010501 (2022) M.Aliotta, R.Buompane, M.Couder, A.Couture, R.J.deBoer, A.Formicola, L.Gialanella, J.Glorius, G.Imbriani, M.Junker, C.Langer, A.Lennarz, Y.A.Litvinov, W.-P.Liu, M.Lugaro, C.Matei, Z.Meisel, L.Piersanti, R.Reifarth, D.Robertson, A.Simon, O.Straniero, A.Tumino, M.Wiescher, Y.Xu The status and future of direct nuclear reaction measurements for stellar burning NUCLEAR REACTIONS 12C(α, γ), 22Ne(α, n), (α, γ), 12C(12C, X), E(cm)<7 MeV; analyzed available data; deduced σ, S-factors.
doi: 10.1088/1361-6471/ac2b0f
2022BO17 Phys.Rev. C 106, 045801 (2022) A.Boeltzig, R.J.deBoer, Y.Chen, A.Best, M.Couder, A.Di Leva, B.Frentz, J.Gorres, Gy.Gyurky, G.Imbriani, M.Junker, Q.Liu, S.Lyons, K.Manukyan, K.T.Macon, L.Morales, M.T.Moran, D.Odell, C.Seymour, G.Seymour, E.Stech, B.Vande Kolk, M.Wiescher Investigation of direct capture in the 23Na(p, γ)24Mg reaction NUCLEAR REACTIONS 23Na(p, γ), E=0.5-1 MeV; measured Eγ, Iγ; deduced σ(E) for 8 γ-transitions, resonance energies and partial widths, asymptotic normalisation coefficients (ANC), S-factor, reaction rate. R-matrix analysis with AZURE2 code. Comparison to other experimental data and theoretical calculations. HPGe detector at Stable ion Accelerator for Nuclear Astrophysics (University of Notre Dame).
doi: 10.1103/PhysRevC.106.045801
2022DE30 Phys.Rev. C 106, 055808 (2022) R.J.deBoer, A.Gula, M.Febbraro, K.Brandenburg, C.R.Brune, J.Gorres, Gy.Gyurky, R.Kelmar, K.Manukyan, Z.Meisel, D.Odell, M.T.Pigni, Shahina, E.Stech, W.Tan, M.Wiescher First near-threshold measurements of the 13C(α, n1)16O reaction for low-background-environment characterization NUCLEAR REACTIONS 13C(α, n), E=5.0-5.57 MeV; measured En, In, angular distributions; deduced σ(θ, E) for α, n1 channel. R-matrix analysis with AZURE2 code. Uncertainty estimation with Bayesian R-matrix Inference Code Kit (BRICK). Comparison to the previous estimates of σ for α, ν1a channel, other experimental results for total σ and statistical model calculations. 3He-spectrometer at Stable ion Accelerator for Nuclear Astrophysics (University of Notre Dame).
doi: 10.1103/PhysRevC.106.055808
2022DO02 Phys.Rev.Lett. 128, 162701 (2022) A.C.Dombos, D.Robertson, A.Simon, T.Kadlecek, M.Hanhardt, J.Gorres, M.Couder, R.Kelmar, O.Olivas-Gomez, E.Stech, F.Strieder, M.Wiescher Measurement of Low-Energy Resonance Strengths in the 18O(α, γ)22Ne Reaction NUCLEAR REACTIONS 18O(α, γ), E=495.4 keV; measured reaction products, Eγ, Iγ; deduced resonance parameters, astrophysical reaction rates. The Sanford Underground Research Facility.
doi: 10.1103/PhysRevLett.128.162701
2022FR09 Phys.Rev. C 106, 065803 (2022) B.Frentz, A.Aprahamian, A.Boeltzig, T.Borgwardt, A.M.Clark, R.J.deBoer, G.Gilardy, J.Gorres, M.Hanhardt, S.L.Henderson, K.B.Howard, T.Kadlecek, Q.Liu, K.T.Macon, S.Moylan, C.S.Reingold, D.Robertson, C.Seymour, S.Y.Strauss, F.Strieder, B.Vande Kolk, M.Wiescher Investigation of the 14N(p, γ)15O reaction and its impact on the CNO cycle NUCLEAR REACTIONS 14N(p, γ), E=0.27-1.07 MeV; measured Eγ, Iγ; deduced σ(θ, E) for particular transitions in daughter nuclei, astrophysical differential and total S-factor, astrophysical reaction rate for T=0.01-10 GK. Multichannel R-matrix analysis for the transition to the ground state, the excited states at 6.17 and 6.79 MeV, as well as 14N(p, p) differential scattering data. Discussed implication of the obtained data on the CNO neutrino production. Comparison to other experimental results. Single coaxial HPGe detector. Beam from 1 MV JN Van de Graaff at the Compact Accelerator System for Performing Astrophysical Research (CASPAR) at the Sanford Underground Research Facility.
doi: 10.1103/PhysRevC.106.065803
2022GU23 Phys.Rev. C 106, 065801 (2022) A.Gula, R.J.deBoer, R.Kelmar, J.Gorres, K.V.Manukyan, E.Stech, W.Tan, M.Wiescher Excitation function for the 6Li + α reaction between 0.5 and 1.4 MeV NUCLEAR REACTIONS 6Li(α, γ), E=460-1400 keV; measured Eγ, Iγ; deduced excitation functions, resonances, reaction rates for T=0.001-9.94 GK, narrow resonance contributions to the reaction rate. 10B; resonances, decay widths, branching ratios. R-matrix analysis with AZURE2 code. Comparison to other experimental data. CeBr3 single detector. Beam from 5U Pelletron accelerator at the University of Notre Dame.
doi: 10.1103/PhysRevC.106.065801
2022OL01 Eur.Phys.J. A 58, 57 (2022) O.Olivas-Gomez, A.Simon, D.Robertson, A.C.Dombos, F.Strieder, T.Kadlecek, M.Hanhardt, R.Kelmar, M.Couder, J.Gorres, E.Stech, M.Wiescher Commissioning of the 4πγ-summing array HECTOR at CASPAR: measurements of 27Al(p, γ)28Si resonances 4850 feet underground NUCLEAR REACTIONS 27Al(p, γ), E=0.2-1 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, resonances, resonance strengths. Comparison with NACRE compilation. The High EffiCiency TOtal absorption spectrometeR (HECTOR).
doi: 10.1140/epja/s10050-022-00711-z
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
2022SH36 Phys.Rev. C 106, 025805 (2022) Shahina, J.Gorres, D.Robertson, M.Couder, O.Gomez, A.Gula, M.Hanhardt, T.Kadlecek, R.Kelmar, P.Scholz, A.Simon, E.Stech, F.Strieder, M.Wiescher Direct measurement of the low-energy resonances in 22Ne(α, γ)26Mg reaction NUCLEAR REACTIONS 22Ne(α, γ), E=650, 830 keV; measured Eγ, Iγ, γ sum spectra; deduced resonances strength values at 830- and 650 keV. 22Ne(p, γ), E=8510 keV; measured Eγ, Iγ, γ sum spectra; deduced resonance strength value at 851 keV. Beam energy uncertainty - 2 keV. Comparison to previous experimental data. HECTOR (High EffiCiency Total absorption spectrometeR (HECTOR)) array of 16 NaI(Tl) crystals at 1-MV JN positive ion accelerator CASPAR (Compact Accelerator System for Performing Astrophysical Research).
doi: 10.1103/PhysRevC.106.025805
2022VA04 Phys.Rev. C 105, 055802 (2022) B.Vande Kolk, K.T.Macon, R.J.deBoer, T.Anderson, A.Boeltzig, K.Brandenburg, C.R.Brune, Y.Chen, A.M.Clark, T.Danley, B.Frentz, R.Giri, J.Gorres, M.Hall, S.L.Henderson, E.Holmbeck, K.B.Howard, D.Jacobs, J.Lai, Q.Liu, J.Long, K.Manukyan, T.Massey, M.Moran, L.Morales, D.Odell, P.O'Malley, S.N.Paneru, A.Richard, D.Schneider, M.Skulski, N.Sensharma, C.Seymour, G.Seymour, D.Soltesz, S.Strauss, A.Voinov, L.Wustrich, M.Wiescher Investigation of the 10B (p, α)7Be reaction from 0.8 to 2.0 MeV NUCLEAR REACTIONS 10B(p, α), (p, p), E=0.8-2.0 MeV; measured Eα, Iα, Ep, Ip; deduced σ(θ), σ(E) S-factor, resonance parameters of 10B+p system - energy, spin, partial (p0, α0, α1) and total width. 10B(p, γ), E=0 .1-2.0 MeV; deduced σ(θ). 11C; deduced levels, J, π. R-matrix analysis. Measurements were made at the University of Notre Dame (UND) Nuclear Science Laboratory (NSL) using a degrader foil method, while those at the Edwards AcceleratorLaboratory at Ohio University (OU) were performed using the time-of-flight (ToF)technique. Comparison with other experimental data.
doi: 10.1103/PhysRevC.105.055802
2022ZH60 Nature(London) 610, 656 (2022) L.Zhang, J.He, R.J.deBoer, M.Wiescher, A.Heger, D.Kahl, J.Su, D.Odell, Y.Chen, X.Li, J.Wang, L.Zhang, F.Cao, H.Zhang, Z.Zhang, X.Jiang, L.Wang, Z.Li, L.Song, H.Zhao, L.Sun, Q.Wu, J.Li, B.Cui, L.Chen, R.Ma, E.Li, G.Lian, Y.D.Sheng, Z.Li, B.Guo, X.Zhou, Y.Zhang, H.Xu, J.Cheng, W.Liu Measurement of 19F(p, γ)20Ne reaction suggests CNO breakout in first stars NUCLEAR REACTIONS 19F(p, γ), E(cm)<400 keV; measured reaction products, Eγ, Iγ; deduced yields, S-factor, resonance strengths, astrophysical reaction rates. Comparison with available data. The Jinping Underground Nuclear Astrophysics Experiment (JUNA).
doi: 10.1038/s41586-022-05230-x
2022ZH67 Phys.Rev. C 106, 055803 (2022) L.Y.Zhang, J.Su, J.J.He, R.J.deBoer, D.Kahl, M.Wiescher, D.Odell, Y.J.Chen, X.Y.Li, J.G.Wang, L.Zhang, F.Q.Cao, H.Zhang, Z.C.Zhang, T.Y.Jiao, Y.D.Sheng, L.H.Wang, L.Y.Song, X.Z.Jiang, Z.M.Li, E.T.Li, S.Wang, G.Lian, Z.H.Li, B.Guo, X.D.Tang, L.T.Sun, Q.Wu, J.Q.Li, B.Q.Cui, L.H.Chen, R.G.Ma, N.C.Qi, W.L.Sun, X.Y.Guo, P.Zhang, Y.H.Chen, Y.Zhou, J.F.Zhou, J.R.He, C.S.Shang, M.C.Li, J.P.Cheng, W.P.Liu Direct measurement of the astrophysical 19F(p, αγ)16O reaction in a deep-underground laboratory NUCLEAR REACTIONS 19F(p, αγ), E(cm)=72.4-344 keV; measured Eγ, Iγ; deduced astrophysical S-factor, thermonuclear astrophysical reaction rates (range 0.05–1 GK), contributions from different channels. R-matrix analysis with AZURE2 together with a MCMC Bayesian uncertainty estimation. Comparison to other experimental data. 4π BGO γ-array with proton beam from JUNA accelerator at China JinPing underground Laboratory (CJPL).
doi: 10.1103/PhysRevC.106.055803
2021CH16 Phys.Rev. C 103, 035809 (2021) Y.Chen, G.P.A.Berg, R.J.deBoer, J.Gorres, H.Jung, A.Long, K.Seetedohnia, R.Talwar, M.Wiescher, S.Adachi, H.Fujita, Y.Fujita, K.Hatanaka, C.Iwamoto, B.Liu, S.Noji, H.-J.Ong, A.Tamii Neutron transfer studies on 25Mg and its correlation to neutron radiative capture processes NUCLEAR REACTIONS 25Mg(d, p)26Mg, E=56 MeV; measured E(p), I(p), σ(θ) using Grand Raiden (GR) spectrometer at the RCNP, AVF cyclotron facility. 26Mg; deduced levels, J, π, L-transfers, spectroscopic factors, and compared with previous experimental results for levels populated in (d, p) and (n, γ) reactions. 25Mg(n, γ)26Mg, E<275 keV; deduced σ(E) using the structure parameters such as level energies and widths from surrogate (d, p) neutron transfer reaction and R-matrix analysis. Relevance to proton-induced nucleosynthesis in the CNO cycles and the rp process.
doi: 10.1103/PhysRevC.103.035809
2021CO05 Rev.Mod.Phys. 93, 015002 (2021) J.J.Cowan, C.Sneden, J.E.Lawler, A.Aprahamian, M.Wiescher, K.Langanke, G.Martinez-Pinedo, F.-K.Thielemann Origin of the heaviest elements: The rapid neutron-capture process
doi: 10.1103/RevModPhys.93.015002
2021DE13 Phys.Rev. C 103, 055815 (2021) R.J.deBoer, O.Clarkson, A.J.Couture, J.Gorres, F.Herwig, I.Lombardo, P.Scholz, M.Wiescher 19F(p, γ)20Ne and 19F(p, αγ)16O reaction rates and their effect on calcium production in Population III stars from hot CNO breakout NUCLEAR REACTIONS 19F(p, αγ)16O, E(cm)<865 keV; 19F(p, p), E(cm)=0.5-0.9 MeV; analyzed and evaluated available experimental data for σ(E, θ), differential S factors, angular distributions, R-matrix fit to secondary γ-ray data, secondary on-resonance γ-ray angular distributions. 16O; deduced levels, resonance energies, J, π, Γp, Γα, Γγ. 19F(p, γ)20Ne, E(cm)<0.8 MeV; analyzed and evaluated experimental data for S factor. 20Ne; deduced levels, resonance energies, J, π, resonance strengths, Γp, Γγ, Γα, Γtotal. 19F(p, γ)20Ne, 19F(p, αγ)16O, T=0.01-1 GK; recommended astrophysical reaction rates, and compared with compilation in NACRE database. Phenomenological R-matrix approach. Discussed astrophysical impact of the evaluated data, and recommended further measurements of importance, for example proton transfer studies needed to determine the proton ANCs of proton bound states. Relevance to the presence of Ca in Fe-poor stars in hot CNO breakout H-burning nucleosynthesis.
doi: 10.1103/PhysRevC.103.055815
2021DE17 Phys.Rev. C 103, 065801 (2021) R.J.deBoer, A.Boeltzig, K.T.Macon, S.Aguilar, O.Gomez, B.Frentz, S.L.Henderson, R.Kelmar, M.Renaud, G.Seymour, B.Vande Kolk, M.Wiescher, C.R.Brune, S.P.Burcher, K.L.Jones, J.M.Kovoor, M.Febbraro, G.Imbriani, S.Mosby, K.Smith, R.Toomey Investigation of secondary γ-ray angular distributions using the 15N(p, α1γ)12C* reaction NUCLEAR REACTIONS 15N(p, αγ)12C*, E=0.88-4.0 MeV; measured Eγ, Iγ, angular distributions using Hybrid Array of LaBr3(Ce) Gamma Ray Detectors (HAGRiD) at the 5-MV Santa Ana accelerator of University of Notre Dame; deduced σ(E), σ(θ) distributions. 15N(p, αγ)12C*; 12C(α, α), (α, α'); analyzed present and previous experimental data for σ(θ) distributions by R-matrix formalism using AZURE2 code. Discussed inconsistencies and difficulty in fitting previous data. Detailed cross section data for both the reactions listed in the Supplemental Material.
doi: 10.1103/PhysRevC.103.065801
2021FR05 Phys.Rev. C 103, 045802 (2021) B.Frentz, A.Aprahamian, A.M.Clark, R.J.deBoer, C.Dulal, J.D.Enright, J.Gorres, S.L.Henderson, J.D.Hinnefeld, K.B.Howard, R.Kelmar, K.Lee, L.Morales, S.Moylan, Z.Rahman, W.Tan, L.E.Weghorn, M.Wiescher Lifetime measurements of excited states in 15O NUCLEAR REACTIONS 14N(p, γ)15O, E=1020, 1570 keV; measured Eγ, Iγ, half-lives of 5.18-, 6.17- and 6.79-MeV levels in 15O by Doppler-shift attenuation method (DSAM) using three separate, nitrogen-implanted targets with Mo, Ta, and W backings at the Nuclear Science Laboratory (NSL) of University of Notre Dame. Comparison with previous half-life measurements. Monte Carlo simulations of Doppler-shift attenuation factors. R-matrix analysis of asymptotic normalization constants (ANCs) and radiative widths Γγ using AZURE2 code for g.s. and levels between 6793 and 9609 keV, including half-lives measured in the present work and experimental data in literature. Relevance to CNO chain of reactions and uncertainty in the 14N(p, γ)15O reaction rate.
doi: 10.1103/PhysRevC.103.045802
2021WI02 Eur.Phys.J. A 57, 24 (2021) M.Wiescher, O.Clarkson, R.J.deBoer, P.Denisenkov Nuclear clusters as the first stepping stones for the chemical evolution of the universe NUCLEAR REACTIONS 6,7Li(α, γ), E(cm)<2.5 MeV; 10B(α, n), (α, d), E(cm)<1.2 MeV; analyzed available data; deduced σ, σ(θ), reaction rates.
doi: 10.1140/epja/s10050-020-00339-x
2021ZH53 Phys.Rev.Lett. 127, 152702 (2021) L.Y.Zhang, J.Su, J.J.He, M.Wiescher, R.J.deBoer, D.Kahl, Y.J.Chen, X.Y.Li, J.G.Wang, L.Zhang, F.Q.Cao, H.Zhang, Z.C.Zhang, T.Y.Jiao, Y.D.Sheng, L.H.Wang, L.Y.Song, X.Z.Jiang, Z.M.Li, E.T.Li, S.Wang, G.Lian, Z.H.Li, X.D.Tang, H.W.Zhao, L.T.Sun, Q.Wu, J.Q.Li, B.Q.Cui, L.H.Chen, R.G.Ma, B.Guo, S.W.Xu, J.Y.Li, N.C.Qi, W.L.Sun, X.Y.Guo, P.Zhang, Y.H.Chen, Y.Zhou, J.F.Zhou, J.R.He, C.S.Shang, M.C.Li, X.H.Zhou, Y.H.Zhang, F.S.Zhang, Z.G.Hu, H.S.Xu, J.P.Chen, W.P.Liu Direct Measurement of the Astrophysical 19F(p, αγ)16O Reaction in the Deepest Operational Underground Laboratory NUCLEAR REACTIONS 19F(p, α), E(cm)=72.4-188.8 keV; measured reaction products, Eγ, Iγ; deduced yields, S-factors, reaction rates. The China Jinping Underground Laboratory (CJPL), JUNA accelerator.
doi: 10.1103/physrevlett.127.152702
2020AH03 Phys.Rev. C 102, 035805 (2020) T.Ahn, S.Aguilar, R.J.deBoer, D.W.Bardayan, A.Boeltzig, C.R.Brune, S.P.Burcher, K.Y.Chae, S.L.Henderson, R.K.Grzywacz, K.L.Jones, J.M.Kovoor, K.T.Macon, K.Manukyan, S.Mosby, P.D.O'Malley, M.Renaud, K.Smith, C.Thornsberry, B.Vande Kolk, M.Wiescher Cross-section measurements to low-lying excited final states in the 24Mg(α, p)27Al*(γ) reaction as an energy source for x-ray bursts NUCLEAR REACTIONS 24Mg(α, p)27Al*, E=4.0-5.4 MeV; measured Eγ, Iγ, γ(θ) for γ rays emitted by resonances in 27Al using an array of 13 LaBr3 detectors from the Hybrid Array of Gamma Ray Detectors (HAGRiD) and enriched target at the ANA accelerator at the University of Notre Dame; deduced yields for resonances in 27Al, integrated angular yields for resonances in 27Al for (α, p1) and (α, p2) channels, astrophysical reaction rates from 1-10 GK. Relevance to energy production in type Ia x-ray bursts. The γ rays also seen from 24Mg(α, a°), 24Mg(α, n)20Ne, and 24Mg(α, γ)28Si.
doi: 10.1103/PhysRevC.102.035805
2020DE12 Phys.Rev. C 101, 045802 (2020) R.J.deBoer, C.R.Brune, M.Febrarro, J.Gorres, I.J.Thompson, M.Wiescher Sensitivity of the 13C(α, n)16O S factor to the uncertainty in the level parameters of the near-threshold state NUCLEAR REACTIONS 13C(α, n)16O, E(cm)<1.2 MeV; calculated astrophysical S factors and reaction rates by R-matrix theory using the AZURE2 code for different sets of level parameters for the near-threshold 1/2+ resonance at 6356 keV in 17O; analyzed theory and available experimental data to investigate the sensitivity of the low-energy extrapolation to the associated uncertainties and discrepancies. Relevance to s process in asymptotic giant branch (AGB) stars and i process in carbon-enhanced metal-poor (CEMP) stars.
doi: 10.1103/PhysRevC.101.045802
2020FE06 Phys.Rev.Lett. 125, 062501 (2020) M.Febbraro, R.J.deBoer, S.D.Pain, R.Toomey, F.D.Becchetti, A.Boeltzig, Y.Chen, K.A.Chipps, M.Couder, K.L.Jones, E.Lamere, Q.Liu, S.Lyons, K.T.Macon, L.Morales, W.A.Peters, D.Robertson, B.C.Rasco, K.Smith, C.Seymour, G.Seymour, M.S.Smith, E.Stech, B.Vande Kolk, M.Wiescher New 13C(α, n)16O Cross Section with Implications for Neutrino Mixing and Geoneutrino Measurements NUCLEAR REACTIONS 13C(α, n), E=5.2-6.4 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with experimental data, JENDL and ENDF/B evaluated libraries.
doi: 10.1103/PhysRevLett.125.062501
2020LI08 Phys.Rev. C 101, 025808 (2020) Q.Liu, M.Febbraro, R.J.deBoer, S.Aguilar, A.Boeltzig, Y.Chen, M.Couder, J.Gorres, E.Lamere, S.Lyons, K.T.Macon, K.Manukyan, L.Morales, S.Pain, W.A.Peters, C.Seymour, G.Seymour, R.Toomey, B.Vande Kolk, J.Weaver, M.Wiescher Low-energy cross-section measurement of the 10B(α, n)13N reaction and its impact on neutron production in first-generation stars NUCLEAR REACTIONS 10B(α, n)13N, E=575-2522 keV; measured E(n), I(n), n(θ), σ(E, θ), differential S factors using deuterated liquid scintillator detector for neutrons at the University of Notre Dame Nuclear Science Laboratory. 10B(α, pγ)13C, E=835-1665 keV; measured Eγ and Iγ. 14N; deduced levels, resonances, J, π, Γα, Γn, Γp, Γd, and Γ from R-matrix analysis, and compared with earlier experimental results. 10B(α, n), (α, p), (α, d), (α, α), E(cm)=0.4-1.2 MeV; analyzed present and previous experimental data for differential σ(E) by R-matrix fit. 10B(α, n)13N, T=0.1-10 GK; deduced astrophysical reaction rates, and compared to literature data.
doi: 10.1103/PhysRevC.101.025808
2020PI11 Eur.Phys.J. A 56, 199 (2020) R.G.Pizzone, C.Spampinato, R.Sparta, M.Couder, W.Tan, V.Burjan, G.D'Agata, G.L.Guardo, M.La Cognata, L.Lamia, J.Mrazek, S.Palmerini, S.Typel, A.Tumino, M.Wiescher, S.Anguilar, D.Bardayan, D.Blankstein, L.Boccioli, L.Callahan, S.M.Cha, K.Y.Chae, A.M.Clark, B.Frentz, M.R.Hall, A.Gula, S.Henderson, R.Kelmar, M.S.Kwag, I.Indelicato, M.La Commara, D.Lattuada, Q.Liu, J.Long, M.Mazzocco, A.Majumdar, S.McGuinness, A.Nelson, A.A.Oliva, P.O'Malley, P.M.Prajapati, G.G.Rapisarda, S.Romano, M.L.Sergi, C.Seymour, M.Skulski, C.Spitaleri, J.Wilkinson Indirect measurement of the 3He(n, p)3H reaction cross section at Big Bang energies NUCLEAR REACTIONS 2H(3He, pt), E=9 MeV; measured reaction products, Ep, Ip; deduced σ for 3He(n, p) reaction using the Trojan Horse Method (THM).
doi: 10.1140/epja/s10050-020-00212-x
2020TA08 Phys.Rev.Lett. 124, 192702 (2020) W.P.Tan, A.Boeltzig, C.Dulal, R.J.deBoer, B.Frentz, S.Henderson, K.B.Howard, R.Kelmar, J.J.Kolata, J.Long, K.T.Macon, S.Moylan, G.F.Peaslee, M.Renaud, C.Seymour, G.Seymour, B.Vande Kolk, M.Wiescher, E.F.Aguilera, P.Amador-Valenzuela, D.Lizcano, E.Martinez-Quiroz New Measurement of 12C+12C Fusion Reaction at Astrophysical Energies NUCLEAR REACTIONS 12C(12C, X), E(cm)=2.2-5.0 MeV; measured reaction products, Eγ, Iγ; deduced σ, S-factor. Comparison with available data.
doi: 10.1103/PhysRevLett.124.192702
2020WI03 Acta Phys.Pol. B51, 631 (2020) M.Wiescher, R.J.DeBoer, J.Gorres, A.Gula, Q.Liu Neutrons Sources in Early Stars*
doi: 10.5506/APhysPolB.51.631
2019BE31 Phys.Lett. B 797, 134900 (2019) A.Best, F.R.Pantaleo, A.Boeltzig, G.Imbriani, M.Aliotta, J.Balibrea-Correa, D.Bemmerer, C.Broggini, C.G.Bruno, R.Buompane, A.Caciolli, F.Cavanna, T.Chillery, G.F.Ciani, P.Corvisiero, L.Csedreki, T.Davinson, R.J.deBoer, R.Depalo, A.Di Leva, Z.Elekes, F.Ferraro, E.M.Fiore, A.Formicola, Zs.Fulop, G.Gervino, A.Guglielmetti, C.Gustavino, Gy.Gyurky, M.Junker, I.Kochanek, M.Lugaro, P.Marigo, R.Menegazzo, V.Mossa, V.Paticchio, R.Perrino, D.Piatti, P.Prati, L.Schiavulli, K.Stockel, O.Straniero, F.Strieder, T.Szucs, M.P.Takacs, D.Trezzi, M.Wiescher, S.Zavatarelli Cross section of the reaction 18O(p, γ)19F at astrophysical energies: The 90 keV resonance and the direct capture component NUCLEAR REACTIONS 18O(p, γ), E<1 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, resonance parameters, σ. Comparison with available data.
doi: 10.1016/j.physletb.2019.134900
2019BO09 Phys.Lett. B 795, 122 (2019) A.Boeltzig, A.Best, F.R.Pantaleo, G.Imbriani, M.Junker, M.Aliotta, J.Balibrea-Correa, D.Bemmerer, C.Broggini, C.G.Bruno, R.Buompane, A.Caciolli, F.Cavanna, T.Chillery, G.F.Ciani, P.Corvisiero, L.Csedreki, T.Davinson, R.J.deBoer, R.Depalo, A.Di Leva, Z.Elekes, F.Ferraro, E.M.Fiore, A.Formicola, Zs.Fulop, G.Gervino, A.Guglielmetti, C.Gustavino, Gy.Gyurky, I.Kochanek, M.Lugaro, P.Marigo, R.Menegazzo, V.Mossa, F.Munnik, V.Paticchio, R.Perrino, D.Piatti, P.Prati, L.Schiavulli, K.Stockel, O.Straniero, F.Strieder, T.Szucs, M.P.Takacs, D.Trezzi, M.Wiescher, S.Zavatarelli Direct measurements of low-energy resonance strengths of the 23Na(p, γ)24Mg reaction for astrophysics NUCLEAR REACTIONS 23Na(p, γ), E<1 MeV; measured reaction products, Eγ, Iγ; deduced resonance parameters, strengths, astrophysical reaction rates. Comparison with available data.
doi: 10.1016/j.physletb.2019.05.044
2019LI42 Phys.Rev. C 100, 034601 (2019) Q.Liu, M.Febbraro, R.J.deBoer, A.Boeltzig, Y.Chen, C.Cerjan, M.Couder, B.Frentz, J.Gorres, E.A.Henry, E.Lamere, K.T.Macon, K.V.Manukyan, L.Morales, P.D.O'Malley, S.D.Pain, W.A.Peters, D.Schneider, C.Seymour, G.Seymour, E.Temanson, R.Toomey, B.Vande Kolk, J.Weaver, M.Wiescher Measurement of the 10Ba (α, n0) 13N cross section for 2.2 < Eα < 4.9 MeV and its application as a diagnostic at the National Ignition Facility NUCLEAR REACTIONS 10B(α, n), (α, n0)13N, E=2.2-4.9 MeV; measured En, In using five deuterated liquid scintillation detectors at the University of Notre Dame Nuclear Science Laboratory; deduced differential σ(E), angular distribution coefficients, thick target yields. Comparison with previous experimental data. Preliminary calculations performed to test feasibility of this reaction as a diagnostic tool for the National Ignition Facility (NIF) implosion. 10B(α, p)13C, E=2.2-4.9 MeV; measured secondary Eγ, γ-ray yields, used for troubleshooting during the experiment.
doi: 10.1103/PhysRevC.100.034601
2019WA02 Phys.Rev. C 99, 015804 (2019) A.Wallner, M.Bichler, L.Coquard, I.Dillmann, O.Forstner, R.Golser, M.Heil, F.Kappeler, W.Kutschera, C.Lederer-Woods, M.Martschini, A.Mengoni, S.Merchel, L.Michlmayr, A.Priller, P.Steier, M.Wiescher Stellar and thermal neutron capture cross section of 9Be NUCLEAR REACTIONS 9Be(n, γ), kT=thermal, 5-100 keV, [neutrons from 7Li(p, n), E=1912, 2284 keV]; measured Maxwellian averaged σ(E) (MACS) using neutron activation combined with accelerator mass spectrometry (AMS) technique; deduced 10Be/9Be ratio in irradiated sample; calculated astrophysical reaction rates for T9=0.001 to 10 for s process nucleosynthesis calculations. Activation technique at Karlsruhe Van de Graaff accelerator, and TRIGA Mark-II reactor for thermal neutrons in combination with accelerator mass spectrometry at the Vienna Environmental Research Accelerator. Comparison with previous experimental values, compiled KADoNiS database, and evaluated libraries ENDF-B/VIII.1, JEFF-3.3, JENDL-4.0, BROND-3.1, and CENDL-3.1.
doi: 10.1103/PhysRevC.99.015804
2018DI06 Phys.Rev. C 97, 055802 (2018) Characterizing the astrophysical S factor for 12C+12C fusion with wave-packet dynamics NUCLEAR REACTIONS 12C(12C, X), E(cm)=1-7 MeV; calculated transmission coefficient, energy-resolved fusion σ(E), angular momentum decomposition of the converged fusion excitation function, astrophysical S factor excitation function with and without reduction in curvature of the potential pockets using time-dependent wave-packet (TDWP) dynamics for subbarrier fusion. Comparison with experimental values, and with other model calculations. Discussed extrapolating the cross section predictions towards stellar energies.
doi: 10.1103/PhysRevC.97.055802
2018LA06 Astrophys.J. 859, 62 (2018) R.Lau, M.Beard, S.S.Gupta, H.Schatz, A.V.Afanasjev, E.F.Brown, A.Deibel, L.R.Gasques, G.W.Hitt, W.R.Hix, L.Keek, P.Moller, P.S.Shternin, A.W.Steiner, M.Wiescher, Y.Xu Nuclear Reactions in the Crusts of Accreting Neutron Stars
doi: 10.3847/1538-4357/aabfe0
2018LO11 Phys.Rev. C 97, 054613 (2018) A.M.Long, T.Adachi, M.Beard, G.P.A.Berg, M.Couder, R.J.deBoer, M.Dozono, J.Gorres, H.Fujita, Y.Fujita, K.Hatanaka, D.Ishikawa, T.Kubo, H.Matsubara, Y.Namiki, S.O'Brien, Y.Ohkuma, H.Okamura, H.J.Ong, D.Patel, Y.Sakemi, Y.Shimbara, S.Suzuki, R.Talwar, A.Tamii, A.Volya, T.Wakasa, R.Watanabe, M.Wiescher, R.Yamada, J.Zenihiro α-unbound levels in 34Ar from 36Ar(p, t)34Ar reaction measurements and implications for the astrophysical 30S (α, p)33Cl reaction rate NUCLEAR REACTIONS 36Ar(p, t), E=100 MeV; measured triton spectra, σ(θ) using Grand Raiden spectrograph at RCNP, Osaka. 34Ar; deduced levels, α-unbound states; calculated single proton widths, spin distributions for selected excitation energies, and α-spectroscopic factors using back-shifted Fermi gas (BSFG) model and shell model calculations. Comparison of 34Ar levels in several previous experiments. 30S(α, p)33Cl, T9=0.10-3.0; calculated astrophysical reaction rates at temperatures relevant to x-ray bursts (XRB) using a Monte Carlo approach within a narrow-resonance formalism. Comparison of reaction rates with two standard Hauser-Feshbach model predictions.
doi: 10.1103/PhysRevC.97.054613
2018LY04 Phys.Rev. C 97, 065802 (2018) S.Lyons, J.Gorres, R.J.deBoer, E.Stech, Y.Chen, G.Gilardy, Q.Liu, A.M.Long, M.Moran, D.Robertson, C.Seymour, B.Vande Kolk, M.Wiescher, A.Best Determination of 20Ne(p, γ)21Na cross sections from Ep = 500 2000 keV NUCLEAR REACTIONS 20,22Ne(p, γ), E=500-2000 keV; measured Eγ, Iγ, γ(θ), differential σ(θ, E) at the KN accelerator of Notre Dame Nuclear Science Laboratory. 21Na; deduced levels, resonances, asymptotic normalization constants (ANCs), proton widths, γ-widths, astrophysical S-factor, and reaction rates in the range of 0.010-10.0 GK. AZURE2 R-matrix analysis. Comparison with previous experimental results, NACRE evaluation, and with theoretical predictions. Relevance to nucleosynthesis of Ne, Na, and Mg isotopes, and hydrogen burning in red giants, asymptotic giant branch (AGB) stars, massive stars, and oxygen-neon (ONe) nova.
doi: 10.1103/PhysRevC.97.065802
2018RE13 Eur.Phys.J.Plus 133, 424 (2018) R.Reifarth, P.Erbacher, S.Fiebiger, K.Gobel, T.Heftrich, M.Heil, F.Kappeler, N.Klapper, D.Kurtulgil, C.Langer, C.Lederer-Woods, A.Mengoni, B.Thomas, S.Schmidt, M.Weigand, M.Wiescher Neutron-induced cross sections NUCLEAR REACTIONS 103Rh, 110,111,112,113,114,116Cd, 114,115,116,117,118,120Sn, 122,123,124,125,126Te, 128,129,130Xe, 134,135,136,137Ba, 141Pr, 142,143,144,145,146,148Nd, 148,149,150,151,152Sm, 152,154,155,156,157,158Gd, 160,161,162,163,164Dy, 170,171,172,173,174,176Yb, 175,176Lu, 176,177,178,179,180Hf, 180,181Ta, 197Au(n, γ), E∼24 keV; analyzed available data on activation technique and the time-of-flight method; deduced multiple corrections for KADoNiS library based on standards library, new 197Au(n, γ) σ evaluation.
doi: 10.1140/epjp/i2018-12295-3
2018WA07 Phys.Rev. C 97, 034612 (2018) F.Wamers, J.Marganiec, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, C.A.Bertulani, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, J.Hoffman, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, C.Lehr, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, K.Riisager, C.Rodriguez-Tajes, D.Rossi, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, S.Typel, H.Weick, M.Wiescher, C.Wimmer Comparison of electromagnetic and nuclear dissociation of 17Ne NUCLEAR REACTIONS H, C, Pb(17Ne, p15O), (17Ne, p14O), (17Ne, 2p15O), (17Ne, 2p14O), E=500 MeV/nucleon; measured reaction products, mass spectra of 13O, 14O and 15O isotopes, (14O)p-, (14O)2p-, (15O)p-, (15O)2p-coin using lead, carbon, and polyethylene targets and ALADIN-R3B setup at GSI; deduced transverse momentum distributions of 14O and 15O, relative energy spectra, inclusive σ, σ(1p) and σ(2p) for fragmentation of 17Ne in 14O and 15o for different targets, electromagnetic dissociation (EMD) cross sections. Electromagnetic and nuclear dissociations. One-proton knockout, and three body 15O+2p correlations. Comparison of measured cross sections and energy spectra with calculations using three-body 15O+2p model, and Hartree-Bogoliubov theory. Relevance to 15O(2p, γ)17Ne capture reaction in astrophysical rp-process.
doi: 10.1103/PhysRevC.97.034612
2017AR04 Prog.Part.Nucl.Phys. 94, 1 (2017) A.Arcones, D.W.Bardayan, T.C.Beers, L.A.Bernstein, J.C.Blackmon, B.Messer, B.A.Brown, E.F.Brown, C.R.Brune, A.E.Champagne, A.Chieffi, A.J.Couture, P.Danielewicz, R.Diehl, M.El Eid, J.E.Escher, B.D.Fields, C.Frohlich, F.Herwig, W.R.Hix, C.Iliadis, W.G.Lynch, G.C.McLaughlin, B.S.Meyer, A.Mezzacappa, F.Nunes, B.W.O'Shea, M.Prakash, B.Pritychenko, S.Reddy, E.Rehm, G.Rogachev, R.E.Rutledge, H.Schatz, M.S.Smith, I.H.Stairs, A.W.Steiner, T.E.Strohmayer, F.X.Timmes, D.M.Townsley, M.Wiescher, R.G.T.Zegers, M.Zingale White paper on nuclear astrophysics and low energy nuclear physics Part 1: Nuclear astrophysics
doi: 10.1016/j.ppnp.2016.12.003
2017DE26 Rev.Mod.Phys. 89, 035007 (2017) R.J.deBoer, J.Gorres, M.Wiescher, R.E.Azuma, A.Best, C.R.Brune, C.E.Fields, S.Jones, M.Pignatari, D.Sayre, K.Smith, F.X.Timmes, E.Uberseder The 12C(α, γ)16O reaction and its implications for stellar helium burning NUCLEAR REACTIONS 12C(α, γ)16O, E(cm)<6 MeV; analyzed available data; deduced σ, reaction rates and uncertainties.
doi: 10.1103/RevModPhys.89.035007
2017FA10 Phys.Rev. C 96, 045804 (2017) X.Fang, W.P.Tan, M.Beard, R.J.deBoer, G.Gilardy, H.Jung, Q.Liu, S.Lyons, D.Robertson, K.Setoodehnia, C.Seymour, E.Stech, B.Vande Kolk, M.Wiescher, R.T.deSouza, S.Hudan, V.Singh, X.D.Tang, E.Uberseder Experimental measurement of 12C + 16O fusion at stellar energies NUCLEAR REACTIONS 12C(16O, p), (16O, n), (16O, α), E=8.5-11.7 MeV in steps of 100 or 200 keV; measured Eγ, Iγ, Ep, Ip, pγ-coin, charged particles, partial and total fusion σ(E) at the (ANA) accelerator laboratory (NSL) of University of Notre Dame; deduced S factors, astrophysical reaction rates, uncertainty range of the reaction rate within the temperature range of late stellar burning environments. Results analyzed using Statistical model calculations with SAPPHIRE code. 27Al, 24Mg, 27Si; deduced levels, relative γ strengths of the observed transitions with respect to the strength of the ground state transition of the first excited states.
doi: 10.1103/PhysRevC.96.045804
2017GU05 Phys.Rev. C 95, 025807 (2017) G.L.Guardo, C.Spitaleri, L.Lamia, M.Gulino, M.La Cognata, X.Tang, R.deBoer, X.Fang, V.Goldberg, J.Mrazek, A.Mukhamedzhanov, M.Notani, R.G.Pizzone, G.G.Rapisarda, M.L.Sergi, M.Wiescher Assessing the near threshold cross section of the 17O(n, α)14C reaction by means of the Trojan horse method NUCLEAR REACTIONS 2H(17O, α14C), E=43.5 MeV; measured reaction products, particle spectra, (particle)(particle)-coin, angular distributions using two telescopes of ionization chambers (IC) and silicon position-sensitive detector (PSD) at LNS-Catania and NSL-Notre Dame accelerator facilities; deduced normalized reaction yields, experimental momentum distribution, quasifission (QF) cross sections and best fit from R-matrix analysis. 18O; deduced levels, resonances, J, π, and Trojan horse method (THM) analysis of Γn, Γα and total widths. 17O(n, α)14C, T9=0.01-10; deduce astrophysical reaction rates by THM method.
doi: 10.1103/PhysRevC.95.025807
2017LO05 Phys.Rev. C 95, 055803 (2017) A.M.Long, T.Adachi, M.Beard, G.P.A.Berg, Z.Buthelezi, J.Carter, M.Couder, R.J.deBoer, R.W.Fearick, S.V.Fortsch, J.Gorres, J.P.Mira, S.H.T.Murray, R.Neveling, P.Papka, F.D.Smit, E.Sideras-Haddad, J.A.Swartz, R.Talwar, I.T.Usman, M.Wiescher, J.J.Van Zyl, A.Volya Indirect study of the stellar 34Ar(α, p)37K reaction rate through 40Ca(p, t)38Ca reaction measurements NUCLEAR REACTIONS 40Ca(p, t)38Ca, E=100 MeV; measured spectra using the K=600 magnetic spectrograph, triton spectra at K=200 Separated Sector Cyclotron facility of iThemba LABS. 38Ca; deduced levels, α-unbound states, resonances, α-spectroscopic factors. Comparison with previous experimental results. 34Ar(α, p)37K, T9=0.2-3.0; deduced reaction rates as a function of stellar temperature, and compared with theoretical model calculations using NON-SMOKER-v5.0w and TALYS 1.8 codes. Relevance to type I x-ray bursts (XRBs).
doi: 10.1103/PhysRevC.95.055803
2017OZ01 Phys.Rev. C 96, 045805 (2017) N.Ozkan, R.T.Guray, C.Yalcin, W.P.Tan, A.Aprahamian, M.Beard, R.J.deBoer, S.Almaraz-Calderon, S.Falahat, J.Gorres, Q.Li, A.Sauerwein, K.Sonnabend, M.Wiescher, Zs.Fulop, Gy.Gyurky, E.Somorjai, J.Greene Proton capture reaction cross section measurements on 162Er as a probe of statistical model calculations NUCLEAR REACTIONS 162Er(p, γ)163Tm, 162Er(p, n)162Tm, E=4.0-9.0 MeV in steps of 0.5 MeV; measured reaction products, Eγ, Iγ, σ(E) by activation method using the FN tandem accelerator at the University of Notre Dame; deduced S factors. Comparison with Hauser Feshbach (HF) statistical model calculations using NON-SMOKER and TALYS codes.
doi: 10.1103/PhysRevC.96.045805
2017UB01 Phys.Rev. C 95, 025803 (2017) E.Uberseder, M.Heil, F.Kappeler, C.Lederer, A.Mengoni, S.Bisterzo, M.Pignatari, M.Wiescher Stellar (n, γ) cross sections of 23Na NUCLEAR REACTIONS 23Na(n, γ)24Na, E=quasistellar thermal neutrons with kT=5.1-25 keV; measured neutron spectra, Eγ, Iγ, Maxwellian averaged σ(E) (MACS) by activation method using NaCl target at Karlsruhe Van de Graaff accelerator; σ(E) analyzed by R-matrix method using SAMMY code. Comparison with ENDF/B-VII.1 evaluation. Calculated relative s-abundance distribution at the end of C-shell burning with the MACS of 23Na from the KADONIS database compilation, ratio of s-process yields.
doi: 10.1103/PhysRevC.95.025803
2017WI05 Phys.Rev. C 95, 044617 (2017) M.Wiescher, R.J.deBoer, J.Gorres, R.E.Azuma Low energy measurements of the 10B (p, α) 7Be reaction NUCLEAR REACTIONS 10B(p, p), (p, α), E=80-1440 keV; measured Eα, Iα σ(θ, E) at incident E(p)=400-1000 keV, and Eγ, Iγ at E(p)=80-1440 keV for the yield of the 429 keV radiation from the reaction at the University of Notre Dame; deduced total S-factor, Legendre polynomial fit parameters from angular distributions. R-matrix analysis. Comparison with previous experimental data.
doi: 10.1103/PhysRevC.95.044617
2016BO10 Eur.Phys.J. A 52, 75 (2016) A.Boeltzig, C.G.Bruno, F.Cavanna, S.Cristallo, T.Davinson, R.Depalo, R.J.deBoer, A.Di Leva, F.Ferraro, G.Imbriani, P.Marigo, F.Terrasi, M.Wiescher Shell and explosive hydrogen burning - Nuclear reaction rates for hydrogen burning in RGB, AGB and Novae COMPILATION 15N(p, γ0), (p, γ), E(cm)=0.01-2 MeV;15N, 17O, 22Ne, 23Na, 25Mg(p, γ), T=0.01-1 GK;17O(p, α), T=0.01-1 GK; compiled data on reaction rates. 15N(p, γ0); deduced S-factor using R-matrix.
doi: 10.1140/epja/i2016-16075-4
2016HA33 Phys.Rev. C 94, 045801 (2016) Z.Halasz, E.Somorjai, Gy.Gyurky, Z.Elekes, Zs.Fulop, T.Szucs, G.G.Kiss, N.T.Szegedi, T.Rauscher, J.Gorres, M.Wiescher Experimental study of the astrophysical γ-process reaction 124Xe(α, γ)128Ba NUCLEAR REACTIONS 124Xe(α, γ)128Ba, 124Xe(α, n)127Ba, E=11-15 MeV; measured Eγ, Iγ, σ(E) by activation method using a thin window gas cell. Comparison with Hauser-Feshbach statistical model calculations, 124Xe+α optical potential, astrophysical gamma-process, and supernova models.
doi: 10.1103/PhysRevC.94.045801
2016LI29 Phys.Rev. C 93, 055806 (2016) Q.Li, J.Gorres, R.J.deBoer, G.Imbriani, A.Best, A.Kontos, P.J.LeBlanc, E.Uberseder, M.Wiescher Cross section measurement of 14N(p, γ)15O in the CNO cycle NUCLEAR REACTIONS 14N(p, γ)15O, E=0.7-3.6 MeV; measured Eγ, Iγ, γ(θ), differential σ(E) for ground-state and 6.79 MeV transitions using the 1MV JN and 4 MV KN Van de Graaff accelerators at the University of Notre Dame. TiN and implanted 14N targets. 15O; deduced levels, resonances, J, π, astrophysical S factors. Multichannel R-matrix analysis. Relevance to CNO cycle in stars.
doi: 10.1103/PhysRevC.93.055806
2016MA26 Phys.Rev. C 93, 045811 (2016) J.Marganiec, S.Beceiro Novo, S.Typel, C.Langer, C.Wimmer, H.Alvarez-Pol, T.Aumann, K.Boretzky, E.Casarejos, A.Chatillon, D.Cortina-Gil, U.Datta-Pramanik, Z.Elekes, Z.Fulop, D.Galaviz, H.Geissel, S.Giron, U.Greife, F.Hammache, M.Heil, J.Hoffman, H.Johansson, O.Kiselev, N.Kurz, K.Larsson, T.Le Bleis, Yu.A.Litvinov, K.Mahata, C.Muentz, C.Nociforo, W.Ott, S.Paschalis, R.Plag, W.Prokopowicz, C.Rodriguez-Tajes, D.M.Rossi, H.Simon, M.Stanoiu, J.Stroth, K.Summerer, A.Wagner, F.Wamers, H.Weick, M.Wiescher Coulomb dissociation of 27P at 500 MeV/u NUCLEAR REACTIONS Pb(27P, p26Si), E=491.3 MeV/nucleon, [27P secondary beam from 9Be(36Ar, X), E=615.5 MeV/nucleon using FRS at GSI]; measured breakup fragments, E(p), I(p), Eγ, Iγ, (fragment)γ-coin using DSSSDs, multi-wire drift Chambers, and spherical 4π array of 162 NaI(Tl) crystals. 27P; deduced invariant-mass spectrum for the Coulomb dissociation (CD) of 27P, proton resonance energies, Coulomb excitation σ, levels, multipolarity, J, π, astrophysical S factor. 26Si(p, γ), T9=0.01-10; deduced thermonuclear reaction rates. Comparisons with previous experimental data, structure of 27Mg mirror nucleus, and theoretical calculations.
doi: 10.1103/PhysRevC.93.045811
2016MA42 Phys.Lett. B 759, 200 (2016) J.Marganiec, F.Wamers, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, C.A.Bertulani, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, J.Hoffmann, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, C.Rodriguez-Tajes, D.Rossi, K.Riisager, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, S.Typel, H.Weick, M.Wiescher, C.Wimmer Coulomb and nuclear excitations of narrow resonances in 17Ne NUCLEAR REACTIONS H, C, Pb(17Ne, 2p), E=500 MeV/nucleon; measured reaction products, Ep, Ip. 17Ne; deduced σ(E), excitation energies and σ for resolved resonances in 17Ne, B(E2). Comparison with available data.
doi: 10.1016/j.physletb.2016.05.073
2016TA09 Phys.Rev. C 93, 055803 (2016) R.Talwar, T.Adachi, G.P.A.Berg, L.Bin, S.Bisterzo, M.Couder, R.J.deBoer, X.Fang, H.Fujita, Y.Fujita, J.Gorres, K.Hatanaka, T.Itoh, T.Kadoya, A.Long, K.Miki, D.Patel, M.Pignatari, Y.Shimbara, A.Tamii, M.Wiescher, T.Yamamoto, M.Yosoi Probing astrophysically important states in the 26Mg nucleus to study neutron sources for the s process NUCLEAR REACTIONS 26Mg(α, α'), E=206 MeV; 22Ne(6Li, d)26Mg, E=82.3 MeV; measured Eα, Iα, E(d), I(d), σ(θ) using Grand Raiden (GR) spectrometer at RCNP-Osaka. 26Mg; deduced α-unbound resonance energies, levels, J, π, α-spectroscopic factors, resonance strengths. Angular distributions for inelastic scattering analyzed by coupled channel code PTOLEMY and for transfer reactions by FRESCO code. 22Ne(α, γ)26Mg, 22Ne(α, n)25Mg, T9=0.01-10; deduced astrophysical reaction rates from resonance parameters. Comparison with previous results. Relevance to slow neutron capture process (s process) in massive stars.
doi: 10.1103/PhysRevC.93.055803
2015BU08 Phys.Rev.Lett. 114, 251102 (2015) B.Bucher, X.D.Tang, X.Fang, A.Heger, S.Almaraz-Calderon, A.Alongi, A.D.Ayangeakaa, M.Beard, A.Best, J.Browne, C.Cahillane, M.Couder, R.J.deBoer, A.Kontos, L.Lamm, Y.J.Li, A.Long, W.Lu, S.Lyons, M.Notani, D.Patel, N.Paul, M.Pignatari, A.Roberts, D.Robertson, K.Smith, E.Stech, R.Talwar, W.P.Tan, M.Wiescher, S.E.Woosley First Direct Measurement of 12C(12C, n)23Mg at Stellar Energies NUCLEAR REACTIONS 12C(12C, n), E=7.5, 9.5 MeV; measured reaction products, Eγ, Iγ, En, In; deduced yields, S-factors, astrophysical reaction rate. Comparison with available data.
doi: 10.1103/PhysRevLett.114.251102
2015CH19 J.Phys.(London) G42, 055102 (2015) L.C.Chamon, L.R.Gasques, G.P.A.Nobre, E.S.Rossi, Jr, R.J.de Boer, C.Seymour, M.Wiescher, G.G.Kiss Evidence of a slight nuclear transparency in the alpha-nucleus systems NUCLEAR REACTIONS 120,130Te(α, α'), E<15 MeV; calculated inelastic σ(θ). EMPIRE nuclear model code, comparison with available data.
doi: 10.1088/0954-3899/42/5/055102
2015DE11 Phys.Rev. C 91, 045804 (2015) R.J.de Boer, D.W.Bardayan, J.Gorres, P.J.LeBlanc, K.V.Manukyan, M.T.Moran, K.Smith, W.Tan, E.Uberseder, M.Wiescher, P.F.Bertone, A.E.Champagne, M.S.Islam Low energy scattering cross section ratios of 14N(p, p)14N NUCLEAR REACTIONS 14N(p, p), E=1-4 MeV; measured E(p), I(p), σ(θ, E) at Notre Dame Van de Graaff accelerator facility. 15O; deduced levels, resonances, l-transfers, J, π, resonance parameters, widths. R-matrix analysis. Discussed relevance of proton scattering data for constraining astrophysically important capture rate analyses.
doi: 10.1103/PhysRevC.91.045804
2015MA09 Eur.Phys.J. A 51, 9 (2015) J.Marganiec, F.Wamers, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, J.Hoffmann, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, C.Rodriguez-Tajes, D.Rossi, K.Riisager, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, H.Weick, M.Wiescher, C.Wimmer, M.V.Zhukov Studies of continuum states in 16Ne using three-body correlation techniques NUCLEAR REACTIONS C(17Ne, n16Ne), E≈500 MeV/nucleon; measured reaction products using Si-strip detectors and separation by magnetic field of ALADIN magnet. 16N deduced resonance energies, widths of different channels, relative energy spectrum of the channels, levels, J, π, two- and three-body correlations.
doi: 10.1140/epja/i2015-15009-0
2015NA14 Phys.Rev. C 92, 025804 (2015) F.Naqvi, S.J.Quinn, A.Spyrou, A.Battaglia, M.Couder, P.A.DeYoung, A.C.Dombos, X.Fang, J.Gorres, A.Kontos, Q.Li, S.Lyons, D.Robertson, A.Simon, K.Smith, M.K.Smith, E.Stech, W.P.Tan, M.Wiescher Proton capture cross section of 72Ge and astrophysical implications NUCLEAR REACTIONS 72,74Ge(p, γ), E=1.8-3.6 MeV; measured Eγ, Iγ, σ(E) using γ-summing detector SuN at Notre Dame Tandem Van de Graff accelerator facility. Natural Ge target. Comparison with calculations using TALYS1.6 code and different combinations of optical model potentials (OMPs), nuclear level densities (NLDs), and γ-ray strength functions, and with data in standard astrophysical libraries BRUSLIB and REACLIB. Relevance to astrophysical p-process.
doi: 10.1103/PhysRevC.92.025804
2015QU01 Phys.Rev. C 92, 045805 (2015) S.J.Quinn, A.Spyrou, A.Simon, A.Battaglia, M.Bowers, B.Bucher, C.Casarella, M.Couder, P.A.DeYoung, A.C.Dombos, J.Gorres, A.Kontos, Q.Li, A.Long, M.Moran, N.Paul, J.Pereira, D.Robertson, K.Smith, M.K.Smith, E.Stech, R.Talwar, W.P.Tan, M.Wiescher (α, γ) cross section measurements in the region of light p nuclei NUCLEAR REACTIONS 74Ge, 90,92Zr(α, γ), E=9.5-12 MeV; measured Eγ, Iγ, σ(E) using the SuN detector and gamma-summing technique at Notre Dame Tandem Van de Graaff accelerator; deduced stellar reaction rates for 90Zr(α, γ) reaction. Nucleosynthesis of light p-process nuclei. Comparison with statistical model calculations using TALYS and NON-SMOKER codes.
doi: 10.1103/PhysRevC.92.045805
2015SE08 Phys.Rev. C 91, 065803 (2015) M.L.Sergi, C.Spitaleri, M.La Cognata, L.Lamia, R.G.Pizzone, G.G.Rapisarda, X.D.Tang, B.Bucher, M.Couder, P.Davies, R.deBoer, X.Fang, L.Lamm, C.Ma, M.Notani, S.O'Brien, D.Roberson, W.Tan, M.Wiescher, B.Irgaziev, A.Mukhamedzhanov, J.Mrazek, V.Kroha Improvement of the high-accuracy 17O(p, α)14N reaction-rate measurement via the Trojan Horse method for application to 17O nucleosynthesis NUCLEAR REACTIONS 2H(17O, α14N)n, E=41, 43.5 MeV; measured particle spectra, (14N)α-coin at LNS-Catania and NSL-Notre Dame accelerator facilities; deduced Q-value spectra, yields as function of 14N and α emission angles, E(14N-α) versus E(α-n) plots, neutron momentum distributions, (14N)α-coincidence yields for different neutron momentum ranges, differential σ(E) of the Trojan-Horse reaction. 18F; deduced parameters for the two resonance levels, resonance strengths for the 65-keV resonance. 17O(p, α)14N; deduced reaction rates via Trojan Horse Method (THM). 18F; compiled resonance energies, J, π, Γp, Γα, Γγ for 24 resonances from -3.12 keV to 1684.5 keV. Relevance to destruction of 17O and the formation of 18F in stellar sites.
doi: 10.1103/PhysRevC.91.065803
2015SI13 Phys.Rev. C 92, 025806 (2015) A.Simon, M.Beard, A.Spyrou, S.J.Quinn, B.Bucher, M.Couder, P.A.DeYoung, A.C.Dombos, J.Gorres, A.Kontos, A.Long, M.T.Moran, N.Paul, J.Pereira, D.Robertson, K.Smith, E.Stech, R.Talwar, W.P.Tan, M.Wiescher Systematic study of (α, γ) reactions for stable nickel isotopes NUCLEAR REACTIONS 58,60,61,62,64Ni(α, γ), E=5-9 MeV; measured Eγ, Iγ, σ(E) using γ-summing detector SuN at Notre Dame tandem (FN) Pelletron accelerator facility; deduced astrophysical reaction rates. Comparison with available experimental data, and with Hauser-Feshbach calculations using TALYS 1.6 code with different combinations of α-optical potentials. nuclear level densities, and E1 γ-ray strength functions. Comparisons with results in NON-SMOKER and BRUSLIB databases.
doi: 10.1103/PhysRevC.92.025806
2015WI03 Europhys.Lett. 109, 62001 (2015) Goals and challenges in experimental nuclear astrophysics
doi: 10.1209/0295-5075/109/62001
2014BE34 Phys.Rev. C 90, 034619 (2014) M.Beard, E.Uberseder, R.Crowter, M.Wiescher Comparison of statistical model calculations for stable isotope neutron capture NUCLEAR REACTIONS 36S, 37Cl, 38,40Ar, 39,40,41K, 40,42,43,44,46,48Ca, 45Sc, 46,47,48,49,50Ti, 196,198,199,200,201,202,204Hg, 203,205Tl, 204,206,207,208Pb(n, γ), E at kT=30 keV; calculated Maxwellian-averaged neutron capture cross sections (MACS) at 30 keV for 340 stable isotopes with N=20-127, Z=16-82 using statistical Hauser-Feshbach model codes TALYS and NON-SMOKER, and two new HF codes, CIGAR and SAPPHIRE. Comparison with data in KAdoNiS database, and other available experimental data. Note that only 32 isotopes out of a total of 340 isotopes studied are listed here.
doi: 10.1103/PhysRevC.90.034619
2014BI20 Astrophys.J. 787, 1 (2014) S.Bisterzo, C.Travaglio, R.Gallino, M.Wiescher, F.Kappeler Galactic chemical evolution and solar s-process abundances: dependence on the 13C-pocket structure NUCLEAR REACTIONS 80,82,83,84,86Kr, Kr, 85,87Rb, Rb, 86,87,88Sr, Sr, 89Y, Y, 90,91,92,94,96Zr, Zr, 93Nb, Nb, 94,95,96,97,98,100Mo, Mo, 99,100,101,102,104Ru, Ru, 103Rh, Rh, 104,105,106,108,110Pd, Pd, 107,109Ag, Ag, 108,110,111,112,113,114,116Cd, Cd, 113,115In, In, 114,115,116,117,118,119,120,122,124Sn, Sn, 121,123Sb, Sb, 122,123,124,125,126,128Te, Te, 127I, I, 128,129,130,131,132,134Xe, Xe, 133Cs, Cs, 134,135,136,137,138Ba, Ba, 139La, La, 140,142Ce, Ce, 141Pr, Pr, 142,143,144,145,146,148Nd, Nd, 147,148,149,150,152,154Sm, Sm, 151,153Eu, Eu, 152,154,155,156,157,158,160Gd, Gd, 159Tb, Tb, 160,161,162,163,164Dy, Dy, 165Ho, Ho, 164,166,167,168,170Er, Er, 169Tm, Tm, 170,171,172,173,174,176Yb, Yb, 175,176Lu, Lu, 176,177,178,179,180Hf, Hf, 180,181Ta, Ta, 180,182,183,184,186W, W, 185,187Re, Re, 186,187,188,189,190,192Os, Os, 191,193Ir, Ir, 192,194,195,196,198Pt, Pt, 197Au, Au, 198,199,200,201,202,204Hg, Hg, 203,205Tl, Tl, 204,206,207,208Pb, Pb, 209Bi, Bi(n, γ), E ∼ 30 keV; analyzed available data; deduced s-process abundances.
doi: 10.1088/0004-637x/787/1/10
2014CH06 J.Phys.(London) G41, 035101 (2014) L.C.Chamon, L.R.Gasques, L.F.M.Alves, V.Guimaraes, P.Descouvemont, R.J.de Boer, M.Wiescher Effect of the inelastic couplings on the scattering of alpha particles by 12C at low energies NUCLEAR REACTIONS 12C(α, α), (α, X)16O, E=7.85-10.42 MeV; analyzed available data, σ and S-factors; deduced the effect of the coupling of the first 2+ state in 12C.
doi: 10.1088/0954-3899/41/3/035101
2014DE13 Phys.Rev. C 89, 055802 (2014) R.J.de Boer, A.Best, J.Gorres, K.Smith, W.Tan, M.Wiescher, R.Raut, G.Rusev, A.P.Tonchev, W.Tornow Photoneutron strengths in 26Mg at energies of astrophysical interest NUCLEAR REACTIONS 26Mg(polarized γ, n), [circularly polarized γ beam produced in Compton backscattering of laser photons from E=498-548 MeV electrons], E=10.80-12.05 MeV; measured Eγ, Iγ, E(n), I(n), time-of-flight spectra, photoneutron σ(E) at HIγS facility of TUNL. 26Mg; deduced level energies above S(n), resonance strengths, comparison with 25Mg(n, γ)26Mg by R-matrix analysis. Relevance to astrophysically important 22Ne(α, n)25Mg reaction.
doi: 10.1103/PhysRevC.89.055802
2014DE32 Phys.Rev. C 90, 035804 (2014) R.J.de Boer, J.Gorres, K.Smith, E.Uberseder, M.Wiescher, A.Kontos, G.Imbriani, A.Di Leva, F.Strieder Monte Carlo uncertainty of the 3He (α, γ)7Be reaction rate NUCLEAR REACTIONS 3He(α, γ)7Be, E(cm)=0.09-3.2 MeV; analyzed ten individual experimental measurements to extract the uncertainties on the cross section and corresponding reaction rate through a global R-matrix analysis using AZURE2 computer code; deduced astrophysical S factor and reaction rates. Relevance to neutrino production in our sun through the pp-II and pp-III chains.
doi: 10.1103/PhysRevC.90.035804
2014DE41 Phys.Lett. B 738, 453 (2014) M.Del Santo, Z.Meisel, D.Bazin, A.Becerril, B.A.Brown, H.Crawford, R.Cyburt, S.George, G.F.Grinyer, G.Lorusso, P.F.Mantica, F.Montes, J.Pereira, H.Schatz, K.Smith, M.Wiescher β-delayed proton emission of 69Kr and the 68Se rp-process waiting point RADIOACTIVITY 69Kr(β+p) [from Be(78Kr, X)69Kr, E not given]; measured reaction products, Ep, Ip, Eβ, Iβ, Eγ, Iγ. 69Br; deduced T1/2, proton separation energy, proton emission decay scheme, γ-ray energies. Comparison with shell model calculations.
doi: 10.1016/j.physletb.2014.10.023
2014GL02 Phys.Rev. C 89, 065808 (2014) J.Glorius, K.Sonnabend, J.Gorres, D.Robertson, M.Knorzer, A.Kontos, T.Rauscher, R.Reifarth, A.Sauerwein, E.Stech, W.Tan, T.Thomas, M.Wiescher Experimental cross sections of 165Ho(α, n)168Tm and 166Er(α, n)169Yb for optical potential studies relevant for the astrophysical γ process NUCLEAR REACTIONS 165Ho, 166Er(α, n), E=10.5-15 MeV; measured Eγ, Iγ, σ(E) by activation technique using Tandem accelerator at NSL-Notre Dame. Comparison with predictions from Hauser-Feshbach calculations using TALYS and SMARAGD codes, and with previous experimental results; analyzed α-nucleus optical potential for simulations of astrophysical γ process.
doi: 10.1103/PhysRevC.89.065808
2014MA26 Acta Phys.Pol. B45, 229 (2014) J.Marganiec, F.Wamers, F.Aksouh, Y.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro, C.Bertulani, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.Chulkov, D.Cortina-Gil, I.Egorova, H.Emling, O.Ershova, C.Forssen, L.M.Fraile, H.Fynbo, D.Galaviz, H.Geissel, L.Grigorenko, M.Heil, D.H.H.Hoffmann, J.Hoffmann, H.Johansson, B.Jonson, M.Karakoc, C.Karagiannis, O.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, K.Larsson, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, Yu.Parfenova, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, K.Riisager, C.Rodriguez-Tajes, D.Rossi, G.Schrieder, N.Shulgina, H.Simon, J.Stroth, K.Summerer, J.Taylor, O.Tengblad, E.Tengborn, H.Weick, M.Wiescher, C.Wimmer, M.Zhukov Study of the 15O(2p, γ)17Ne Cross Section by Coulomb Dissociation of 17Ne for the rp Process of Nucleosynthesis NUCLEAR REACTIONS Pb(17Ne, 2p)15O, E=500 MeV/nucleon; measured reaction products, Eγ, Iγ, Ep, Ip; deduced σ, σ(E), resonances. Comparison with theoretical calculations, R3BROOT package.
doi: 10.5506/APhysPolB.45.229
2014MO35 Nucl.Instrum.Methods Phys.Res. A767, 359 (2014) D.J.Mountford, R.J.de Boer, P.Descouvemont, A.St.J.Murphy, E.Uberseder, M.Wiescher Evaluation of the implementation of the R-matrix formalism with reference to the astrophysically important 18F(pα)15O reaction NUCLEAR REACTIONS 18F(p, α), E(cm)=0.6-1.6 MeV; calculated resonance parameter widths, σ(θ), S-factors. R-matrix formalism, AZURE code.
doi: 10.1016/j.nima.2014.08.047
2014QU01 Phys.Rev. C 89, 054611 (2014) S.J.Quinn, A.Spyrou, E.Bravo, T.Rauscher, A.Simon, A.Battaglia, M.Bowers, B.Bucher, C.Casarella, M.Couder, P.A.DeYoung, A.C.Dombos, J.Gorres, A.Kontos, Q.Li, A.Long, M.Moran, N.Paul, J.Pereira, D.Robertson, K.Smith, M.K.Smith, E.Stech, R.Talwar, W.P.Tan, M.Wiescher Measurement of the 58Ni(α, γ)62Zn reaction and its astrophysical impact NUCLEAR REACTIONS 58Ni(α, γ)62Zn, E=5.5-9.5 MeV; measured Eγ, Iγ, σ(E) using Summing NaI(Tl) (SuN) detector at NSL-Notre Dame facility; deduced astrophysical reaction rates. Comparison with predictions from statistical Hauser-Feshbach model using SMARAGD code. Discussed Astrophysical implications and elemental abundances.
doi: 10.1103/PhysRevC.89.054611
2014QU04 Nucl.Instrum.Methods Phys.Res. A 757, 62 (2014) S.J.Quinn, A.Spyrou, A.Simon, A.Battaglia, M.Bowers, B.Bucher, C.Casarella, M.Couder, P.A.Deyoung, A.C.Dombos, J.P.Greene, J.Gorres, A.Kontos, Q.Li, A.Long, M.Moran, N.Paul, J.Pereira, D.Robertson, K.Smith, M.K.Smith, E.Stech, R.Talwar, W.P.Tan, M.Wiescher First application of the technique in inverse kinematics NUCLEAR REACTIONS 1H(27Al, γ), 1H(58Ni, γ), 27Al(p, γ), 58Ni(p, γ), E=956 keV-1.5 GeV; measured products, Eγ, Iγ; deduced resonance parameters. Data were imported from EXFOR entry C2123.
doi: 10.1016/j.nima.2014.05.020
2014SC01 Nature(London) 505, 62 (2014) H.Schatz, S.Gupta, P.Moller, M.Beard, E.F.Brown, A.T.Deibel, L.R.Gasques, W.R.Hix, L.Keek, R.Lau, A.W.Steiner, M.Wiescher Strong neutrino cooling by cycles of electron capture and β- decay in neutron star crusts NUCLEAR STRUCTURE 105Zr; calculated single-particle energy levels, J, π, hexadecapole deformation parameters.
doi: 10.1038/nature12757
2013BE11 Phys.Rev. C 87, 045805 (2013) A.Best, M.Beard, J.Gorres, M.Couder, R.deBoer, S.Falahat, R.T.Guray, A.Kontos, K.-L.Kratz, P.J.LeBlanc, Q.Li, S.O'Brien, N.Ozkan, M.Pignatari, K.Sonnabend, R.Talwar, W.Tan, E.Uberseder, M.Wiescher Measurement of the reaction 17O(α, n)20Ne and its impact on the s process in massive stars NUCLEAR REACTIONS 17O(α, n), E=800-2300 keV; measured Eγ, Iγ, E(n), I(n), yields as function of incident Eα for (α, n0) and (α, n1) channels; deduced R-matrix parameters, S factors, reaction rates. 21Ne; deduced levels, resonances, J, π, width, resonance strengths. R-matrix analyses. 17O(α, n), (α, γ), E at 0.1 to 10 GK; comparison of experimental and theoretical (NACRE, CF88/1000) reaction rates. Hauser-Feshbach theory. Astrophysical implications for the s-process, and elemental abundance.
doi: 10.1103/PhysRevC.87.045805
2013BE12 Phys.Rev. C 87, 045806 (2013) A.Best, S.Falahat, J.Gorres, M.Couder, R.deBoer, R.T.Guray, A.Kontos, K.-L.Kratz, P.J.LeBlanc, Q.Li, S.O'Brien, N.Ozkan, K.Sonnabend, R.Talwar, E.Uberseder, M.Wiescher Measurement of the reaction 18O(α, n)21Ne NUCLEAR REACTIONS 18O(α, n), E=851-2300 keV; measured Eγ, Iγ, E(n), I(n), yields as function of incident Eα for (α, n0) and (α, n1) channels; deduced R-matrix parameters, S factors, reaction rates. 22Ne; deduced levels, resonances, J, π, width, resonance strengths. R-matrix analyses. 18O(α, n), (α, γ), E at 0.1 to 10 GK; comparison of experimental and theoretical (NACRE, CF88) reaction rates. Hauser-Feshbach theory.
doi: 10.1103/PhysRevC.87.045806
2013CH39 Bull.Rus.Acad.Sci.Phys. 77, 890 (2013); Izv.Akad.Nauk RAS, Ser.Fiz 77, 978 (2013) A.I.Chugunov, A.V.Afanasjev, M.Beard, M.Wiescher, D.G.Yakovlev Simple approximation of cross sections for nuclear reactions involving Z = 3-12, 14 nuclei NUCLEAR REACTIONS Be, B, C, N, O, F, Ne, Na, Mg, Si(Be, X), B, C, N, O, F, Ne, Na, Mg, Si(B, X), C, N, O, F, Ne, Na, Mg, Si(C, X), N, O, F, Ne, Na, Mg, Si(N, X), O, F, Ne, Na, Mg, Si(O, X), F, Ne, Na, Mg, Si(F, X), Ne, Na, Mg, Si(Ne, X), Na, Mg, Si(Na, X), Mg, Si(Mg, X), Si(Si, X), E not given; San Paulo potential, below the Coulomb barrier energies.
doi: 10.3103/S1062873813070083
2013DE03 Phys.Rev. C 87, 015802 (2013) R.J.de Boer, J.Gorres, G.Imbriani, P.J.LeBlanc, E.Uberseder, M.Wiescher R-matrix analysis of 16O compound nucleus reactions NUCLEAR REACTIONS 15N(p, γ)16O, 15N(p, α)12C, 15N(p, p), E<1.8 MeV; 12C(α, p)15N, 12C(α, α), 12C(α, γ)16O, E=6.8-8.3 MeV; analyzed S factors, σ(E, θ), yields for all available reaction channels simultaneously using a multichannel R-matrix code AZURE. 16O; deduced R-matrix description for the broad level structure.
doi: 10.1103/PhysRevC.87.015802
2013GU02 Phys.Rev. C 87, 012801 (2013) M.Gulino, C.Spitaleri, X.D.Tang, G.L.Guardo, L.Lamia, S.Cherubini, B.Bucher, V.Burjan, M.Couder, P.Davies, R.deBoer, X.Fang, V.Z.Goldberg, Z.Hons, V.Kroha, L.Lamm, M.La Cognata, C.Li, C.Ma, J.Mrazek, A.M.Mukhamedzhanov, M.Notani, S.O'Brien, R.G.Pizzone, G.G.Rapisarda, D.Roberson, M.L.Sergi, W.Tan, I.J.Thompson, M.Wiescher Suppression of the centrifugal barrier effects in the off-energy-shell neutron + 17O interaction NUCLEAR REACTIONS 2H(17O, α14C), E=41, 43.5 MeV; measured α and 14C particle spectra, (14C)α-coin, angular distributions, yields using position-sensitive silicon detectors (PSD) at LNS, Catania, and at NSL, Notre Dame. CD2 target; deduced momentum distributions, Q value. DWBA analysis. 17O(n, α)14C, E(cm)=0-350 keV; deduced yields, angular distributions, neutron from quasifree breakup of deuteron. 18O; deduced resonances, J, π, and excitation functions. Trojan Horse method (THM), and suppression of centrifugal barrier. Comparison with previous studies. Relevance to neutron-induced reactions in nuclear reactors, and nucleosynthesis in astrophysics.
doi: 10.1103/PhysRevC.87.012801
2013HE21 Phys.Lett. B 725, 287 (2013) J.J.He, S.Z.Chen, C.E.Rolfs, S.W.Xu, J.Hu, X.W.Ma, M.Wiescher, R.J.de Boer, T.Kajino, M.Kusakabe, L.Y.Zhang, S.Q.Hou, X.Q.Yu, N.T.Zhang, G.Lian, Y.H.Zhang, X.H.Zhou, H.S.Xu, G.Q.Xiao, W.L.Zhan A drop in the 6Li(p, γ)7Be reaction at low energies NUCLEAR REACTIONS 6Li(p, γ), E(cm)<1 MeV; measured reaction products, Eγ, Iγ; deduced S-factors, positive-parity resonance. Comparison with available data, SUSY assisted Big-bang Nucleosynthesis models.
doi: 10.1016/j.physletb.2013.07.044
2013KO18 Phys.Rev. C 87, 065804 (2013) A.Kontos, E.Uberseder, R.deBoer, J.Gorres, C.Akers, A.Best, M.Couder, M.Wiescher Astrophysical S factor of 3He (α, γ)7Be NUCLEAR REACTIONS 3He(α, γ)7Be, E=530-2550 keV; measured Eγ, Iγ, particle spectra, radiative capture σ at NSL facility in Notre Dame; deduced astrophysical S(E) factor, branching ratio, gamma and proton widths, reaction rates at T=0.01 to 10 GK. R-matrix analyses for 3He(α, α)3He and 3He(α, γ)7Be data. Discussed astrophysical implications. Comparison with previous experimental studies.
doi: 10.1103/PhysRevC.87.065804
2013QU01 Phys.Rev. C 88, 011603 (2013) S.J.Quinn, A.Spyrou, A.Simon, A.Battaglia, M.Couder, P.A.DeYoung, A.C.Dombos, X.Fang, J.Gorres, A.Kontos, Q.Li, S.Lyons, B.S.Meyer, G.F.Peaslee, D.Robertson, K.Smith, M.K.Smith, E.Stech, W.P.Tan, X.D.Tang, M.Wiescher Probing the production mechanism of the light p-process nuclei NUCLEAR REACTIONS 74Ge(p, γ)75As, E=1.6-4.2 MeV; measured Eγ, Iγ, σ(E) using the NSCL SuN detector at Notre Dame facility; deduced astrophysical S(E) factors, reaction rates at T9=0.10-10.0, cumulative mass fraction of 74Se in a Type II Supernova model. Comparison with previous experimental data, and with theoretical predictions using NON-SMOKER and TALYS nuclear reaction codes.
doi: 10.1103/PhysRevC.88.011603
2013SI11 Phys.Rev. C 87, 055802 (2013) A.Simon, A.Spyrou, T.Rauscher, C.Frohlich, S.J.Quinn, A.Battaglia, A.Best, B.Bucher, M.Couder, P.A.DeYoung, X.Fang, J.Gorres, A.Kontos, Q.Li, L.-Y.Lin, A.Long, S.Lyons, A.Roberts, D.Robertson, K.Smith, M.K.Smith, E.Stech, B.Stefanek, W.P.Tan, X.D.Tang, M.Wiescher Systematic study of (p, γ) reactions on Ni isotopes NUCLEAR REACTIONS 58,60,61,62,64Ni(p, γ), E=2.0-6.0 MeV; measured Eγ, Iγ, σ(E) using the NSCL-SuN gamma detector utilizing γ-summing technique at Notre Dame; deduced sensitivity of the reaction σ(E) with variation of γ- and particle width. Comparison with theoretical predictions from NON-SMOKER and SMARAGD computer code calculations, and with previous experimental data. Predicted astrophysical reaction rates on all stable nickel isotopes including that for 56Ni(p, γ)57Cu.
doi: 10.1103/PhysRevC.87.055802
2013SI35 Nucl.Instrum.Methods Phys.Res. A 703, 16 (2013) A.Simon, S.J.Quinn, A.Spyrou, A.Battaglia, I.Beskin, A.Best, B.Bucher, M.Couder, P.A.Deyoung, X.Fang, J.Gorres, A.Kontos, Q.Li, S.N.Liddick, A.Long, S.Lyons, K.Padmanabhan, J.Peace, A.Roberts, D.Robertson, K.Smith, M.K.Smith, E.Stech, B.Stefanek, W.P.Tan, X.D.Tang, M.Wiescher SuN: Summing NaI(Tl) gamma-ray detector for capture reaction measurements NUCLEAR REACTIONS 27Al(p, γ), E=2.3-3.9 MeV; measured products, Eγ, Iγ; deduced resonance parameters. Data were imported from EXFOR entry C1967.
doi: 10.1016/j.nima.2012.11.045
2013SP04 Phys.Rev. C 88, 045802 (2013) A.Spyrou, S.J.Quinn, A.Simon, T.Rauscher, A.Battaglia, A.Best, B.Bucher, M.Couder, P.A.DeYoung, A.C.Dombos, X.Fang, J.Gorres, A.Kontos, Q.Li, L.Y.Lin, A.Long, S.Lyons, B.S.Meyer, A.Roberts, D.Robertson, K.Smith, M.K.Smith, E.Stech, B.Stefanek, W.P.Tan, X.D.Tang, M.Wiescher Measurement of the 90, 92Zr(p, γ)91, 93Nb reactions for the nucleosynthesis of elements near A=90 NUCLEAR REACTIONS 90,92Zr(p, γ)91Nb/93Nb, E=2.0-5.0 MeV; measured Eγ, Iγ, σ(E) using NSCL SuN detector at Notre Dame accelerator facility; deduced astrophysical S factors, reaction rates, sensitivity of reaction to widths in Hauser-Feshbach model. Comparison with standard NON-SMOKER model, and two TALYS calculations. Relevance to synthesis and abundances of light p nuclei.
doi: 10.1103/PhysRevC.88.045802
2012AF01 Phys.Rev. C 85, 054615 (2012) A.V.Afanasjev, M.Beard, A.I.Chugunov, M.Wiescher, D.G.Yakovlev Large collection of astrophysical S factors and their compact representation NUCLEAR REACTIONS Be(Be, X), (B, X), (C, X), (N, X), (O, X), (F, X), (Ne, X), (Na, X), (Mg, X), (Si, X), B(B, X), (C, X), (N, X), (O, X), (F, X), (Ne, X), (Na, X), (Mg, X), (Si, X), C(C, X), (N, X), (F, X), (O, X), (Ne, X), (Na, X), (Mg, X), (Si, X), N(N, X), (O, X), (F, X), (Ne, X), (Na, X), (Mg, X), (Si, X), O(O, X), (F, X), (Ne, X), (Na, X), (Mg, X), (Si, X), F(F, X), (Ne, X), (Na, X), (Mg, X), (Si, X), Ne(Ne, X), (Na, X), (Mg, X), (Si, X), Na(Na, X), (Mg, X), (Si, X), Mg(Mg, X), (Si, X), Si(Si, X), E<39.8 MeV; calculated astrophysical S factors as function of incident energy for A=8-14 Be, A=9-21 for B, A=10-24 for C, A=11-27 for N, A=12-28 for O, A=17-29 for F, A=18-40 for Ne, A=19-43 for Na, A=20-46 for Mg and A=24-52 for Si for a database of 5000 nonresonant fusion reactions. Sao Paulo method and the barrier penetration model. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.054615
2012AL11 Phys.Rev. C 86, 025801 (2012); Pub.Note. Phys.Rev. C 86, 029901 (2012) S.Almaraz-Calderon, W.P.Tan, A.Aprahamian, B.Bucher, A.Roberts, M.Wiescher, C.R.Brune, T.N.Massey, N.Ozkan, R.T.Guray, H.Mach Level structure of 18Ne and its importance in the 14O(α, p)17F reaction rate NUCLEAR REACTIONS 16O(3He, n), E=15 MeV; measured neutron and charged particle spectra, (particle)n-coin, neutron time-of-flight spectrum, p(θ), branching ratios for proton, 2p and α decays of excited states. 18Ne; deduced levels, resonances, J, π, decay modes, widths. 14,16O, 17F; populated g.s. from p, 2p and α decays of 18Ne resonances, and first excited state in 17F from p decay of 18Ne resonances. 14O(α, p)17F, T=0.1-5 GK; calculated reaction rates of astrophysical interest for Hot CNO cycles and their breakout paths towards the rp process. Comparison with previous studies.
doi: 10.1103/PhysRevC.86.025801
2012AL23 Phys.Rev. C 86, 065805 (2012); Erratum Phys.Rev. C 88, 059902 (2013) S.Almaraz-Calderon, W.P.Tan, A.Aprahamian, M.Beard, G.P.A.Berg, B.Bucher, M.Couder, J.Gorres, S.O'Brien, D.Patel, A.Roberts, K.Sault, M.Wiescher, C.R.Brune, T.N.Massey, K.Fujita, K.Hatanaka, D.Ishiwaka, H.Matsubara, H.Okamura, H.J.Ong, Y.Sakemi, Y.Shimizu, T.Suzuki, Y.Tameshige, A.Tamii, J.Zenihiro, T.Kubo, Y.Namiki, Y.Ohkuma, Y.Shimbara, S.Suzuki, R.Watanabe, R.Yamada, T.Adachi, Y.Fujita, H.Fujita, M.Dozono, T.Wakasa Level structure of 30S and its importance in the 26Si(α, p)29P and 29P(p, γ)30S reaction rates NUCLEAR REACTIONS 32S(p, t), E=98.7 MeV; measured triton spectra at two angles using Grand Raiden (GR) magnetic spectrometer at RCNP facility. 28Si(3He, n), E=15 MeV; measured neutron (TOF) spectra, charged-particle spectra, (charged-particle)n-coin, angular distributions using LESA array and scintillation detectors at Notre Dame NSL facility. 30S; deduced levels, proton- and α- unbound levels, J, π, proton branching ratios, partial proton widths. DWBA analysis. Comparison with several previous experimental studies. 29P(p, γ)30S, 26Si(α, p)29P, T9=0.01-10 GK; deduced astrophysical reaction rates. Comparison with previous theoretical calculations. Contribution of resonances to total reaction rates.
doi: 10.1103/PhysRevC.86.065805
2012BE22 Phys.Rev. C 85, 065808 (2012) M.Beard, S.Frauendorf, B.Kampfer, R.Schwengner, M.Wiescher Photonuclear and radiative-capture reaction rates for nuclear astrophysics and transmutation: 92-100Mo, 88Sr, 90Zr, and 139La NUCLEAR REACTIONS 92,94,96,98,100Mo, 88Sr, 90Zr, 139La(γ, n), (γ, p), (γ, α), (n, γ), (p, γ), (α, γ), E<16 MeV; calculated γ strength functions, σ(E), stellar reaction rates. Statistical model code TALYS, single Lorentzian (SLO), double Lorentzian (DLO), and generalized Lorentzian (GLO) calculations. Enhancement of radiative capture reaction cross sections by pygmy resonances in 88Sr, 90Zr and 139La. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.065808
2012BE55 J.Phys.:Conf.Ser. 387, 012003 (2012) G.P.A.Berg, Y.Fujita, J.Gorres, M.N.Harakeh, K.Hatanaka, A.Long, R.Neveling, F.D.Smit, R.Talwar, A.Tamii, M.Wiescher High precision measurements for the rp-process NUCLEAR REACTIONS 38Ca(α, p), E not given; measured Ep, Ip(θ). 40Ca(p, t), E=100 MeV; measured E(t), I(t, θ); deduced triton spectrum. 46Ti(α, 8He), E=206 MeV; measured E(particle), I(particle, θ). To be deduced rp-process reaction rates.
doi: 10.1088/1742-6596/387/1/012003
2012DE06 Phys.Rev. C 85, 038801 (2012) R.J.de Boer, P.J.LeBlanc, S.Falahat, G.Imbriani, J.Gorres, S.O'Brien, E.Uberseder, M.Wiescher Elastic scattering of protons from 15N NUCLEAR REACTIONS 15N(p, p), (p, α), E=0.6-1.8 MeV; measured particle spectra, σ(E, θ), yields. 16O; deduced resonances, levels, J, π, widths. R-matrix analysis. Comparison with previous studies. Relevance to 15N(p, γ)16O reaction cross sections at stellar energies.
doi: 10.1103/PhysRevC.85.038801
2012DE08 Phys.Rev. C 85, 045804 (2012) R.J.de Boer, A.Couture, R.Detwiler, J.Gorres, P.Tischhauser, E.Uberseder, C.Ugalde, E.Stech, M.Wiescher, R.E.Azuma Measurement of elastic 12C + α scattering: Above the proton separation energy NUCLEAR REACTIONS 12C(α, α), E=2.6-8.2 MeV; measured Eα, Iα, σ(E, θ). 12C(α, α'), (α, p), E=6.6-8.2 MeV; analyzed σ(E, θ) data. 16O; deduced resonances, levels, J, π, α and proton widths. R-matrix analysis. Relevance to CNO cycle.
doi: 10.1103/PhysRevC.85.045804
2012IM02 Phys.Rev. C 85, 065810 (2012), Erratum Phys.Rev. C 86, 039902 (2012) G.Imbriani, R.J.de Boer, A.Best, M.Couder, G.Gervino, J.Gorres, P.J.LeBlanc, H.Leiste, A.Lemut, E.Stech, F.Strieder, E.Uberseder, M.Wiescher Measurement of γ rays from 15N(p, γ)16O cascade and 15N(p, α1γ)12C reactions NUCLEAR REACTIONS 15N(p, γ)16O, 15N(p, αγ)12C, E=0.14-1.80 MeV; measured Eγ, Iγ, S factors, cross section. 12C, 16O; deduced levels, J, π, widths. R-matrix analysis. Comparison with previous studies.
doi: 10.1103/PhysRevC.85.065810
2012KO41 Phys.Rev. C 86, 055801 (2012); Erratum Phys.Rev. C 88, 029905 (2013) A.Kontos, J.Gorres, A.Best, M.Couder, R.deBoer, G.Imbriani, Q.Li, D.Robertson, D.Schurmann, E.Stech, E.Uberseder, M.Wiescher Proton capture on 17O and its astrophysical implications NUCLEAR REACTIONS 17O(p, γ)18F, E(cm)=345-1700 keV, measured Eγ, Iγ, γ(θ), excitation functions, σ(E). 18F; deduced levels, proton resonances, J, π, γ-branching ratios, resonance strengths, ANC, spectroscopic factors, proton, alpha and gamma widths, astrophysical reaction rates and S factors. R-matrix analysis. Comparison with literature values. Relevance to hydrogen-burning nucleosynthesis.
doi: 10.1103/PhysRevC.86.055801
2012PA03 Phys.Rev. C 85, 028801 (2012) A.Palumbo, W.P.Tan, J.Gorres, M.Wiescher, N.Ozkan, R.T.Guray, C.Yalcin Measurement of 120Te(α, n) cross sections relevant to the astrophysical p process NUCLEAR REACTIONS 120Te(α, n), E(cm)=9.99, 10.14, 10.63 MeV; measured Eγ, Iγ, cross section by activation technique; deduced S factor. Comparison with Hauser-Feshbach (HF) calculations using CIGAR computer code, and TALYS code.
doi: 10.1103/PhysRevC.85.028801
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