NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = A.M.Clark Found 14 matches. 2023HU12 Phys.Rev. C 107, 064612 (2023) S.Hudan, J.E.Johnstone, R.Kumar, R.T.deSouza, J.Allen, D.W.Bardayan, D.Blankstein, C.Boomershine, S.Carmichael, A.Clark, S.Coil, S.L.Henderson, P.D.O'Malley, W.W.von Seeger Quantifying resonance behavior in the fusion of 17O with 12C at above-barrier energies NUCLEAR REACTIONS 12C(17O, X)29Si, E=47, 47.5, 48, 55 MeV; measured reaction products, evaporation residues, charged particles; deduced fusion excitation functions, fusion σ(E). Comparison to other experimental data including fusion data on 17F+12C system. Systematics of the fusion σ for 16,17,18,19+12C systems. Gas filled (CH4) active target MuSIC@Indiana at the University of Notre Dame Nuclear Science Laboratory.
doi: 10.1103/PhysRevC.107.064612
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
2022LI11 Nucl.Phys. A1021, 122424 (2022) W.Lin, J.T.Wilkinson, K.E.Barrett, T.E.Barnhart, M.Gott, K.V.Becker, A.M.Clark, A.Miller, G.Brown, M.DeLuca, R.Bartsch, G.F.Peaslee, J.W.Engle Excitation function of 54Fe(p, α)51Mn from 9.5 MeV to 18 MeV NUCLEAR REACTIONS 54Fe(p, α), E=9.5-18 MeV; measured reaction products, Eγ, Iγ; deduced σ and uncertainties. Comparison with TALYS calculations, available data. The 11MV FN Tandem Van de Graaff accelerator at University of Notre Dame's (ND) Nuclear Science Laboratory (NSL).
doi: 10.1016/j.nuclphysa.2022.122424
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
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
2021MC02 Nucl.Instrum.Methods Phys.Res. B493, 15 (2021) S.R.McGuinness, S.J.Ferran, J.T.Wilkinson, C.S.Loveless, T.Anderson, D.Blankstein, A.M.Clark, S.L.Henderson, A.D.Nelson, C.S.Reingold, M.Skulski, S.E.Lapi, G.F.Peaslee Production of 52Fe from symmetric complete fusion-evaporation reactions NUCLEAR REACTIONS 27Al(28Si, 2np)52Fe, E=85.5 MeV; measured reaction products, Eγ, Iγ; deduced yields, σ. Comparison with PACE4 calculations.
doi: 10.1016/j.nimb.2021.02.008
2020AN02 Phys.Rev. C 101, 025801 (2020) T.Anderson, M.Skulski, L.Callahan, A.Clark, A.Nelson, P.Collon, G.Chmiel, T.Woodruff, M.Caffee Measurement of 34S(3He, p)36Cl cross sections for nuclide enrichment in the early solar system NUCLEAR REACTIONS 3He(34S, p)36Cl, E=1.11-2.36 MeV/nucleon; measured production σ(E) for 36Cl at NSL, University of Notre Dame, 36Cl atoms by accelerator mass spectroscopy (AMS) at NSL and at PRIME laboratory, Purdue University. Comparison with predictions from TALYS and other models. Discussed astrophysical implications of 36Cl in terms of presence of short-lived radionuclides (SLRs) at the time of the formation of the solar system.
doi: 10.1103/PhysRevC.101.025801
2020KE01 Phys.Rev. C 101, 015801 (2020), Erratum Phys.Rev. C 96, 019901 (2017) R.Kelmar, A.Simon, O.Olivas-Gomez, P.Millican, C.S.Reingold, E.Churchman, A.M.Clark, S.L.Henderson, S.E.Kelly, D.Robertson, E.Stech, W.P.Tan Searching for (γ, α)/(γ, n) branching points in the γ-process path near A+100 NUCLEAR REACTIONS 90Zr, 102Pd, 108,110Cd(α, γ), E(cm)=7.5-11.6 MeV; measured Eγ, Iγ, σ(E) using High Efficiency total absorption spectrometer (HECTOR) composed of 16 NaI(Tl) detectors at the University of Notre Dame Nuclear Science Laboratory. Comparison with data in NONSMOKER database, and with calculations using TALYS 1.9 code. 90Zr, 102Pd, 108,110Cd(α, γ), T9=0.3-10; deduced astrophysical reaction rates using the TALYS 1.9 code with the back-shifted Fermi gas LD model, the αOMP, and the Brink-Axel Lorentzian γSF.
doi: 10.1103/PhysRevC.101.015801
2020LO01 Phys.Rev. C 101, 015501 (2020) J.Long, M.Brodeur, M.Baines, D.W.Bardayan, F.D.Becchetti, D.Blankstein, C.Boomershine, D.P.Burdette, A.M.Clark, B.Frentz, S.L.Henderson, J.M.Kelly, J.J.Kolata, B.Liu, K.T.Macon, P.D.O'Malley, A.Pardo, C.Seymour, S.Y.Strauss, B.Vande Kolk Precision half-life measurement of 29P RADIOACTIVITY 29P(β+)[from 2H(28Si, X), E=9 MeV, followed by separation of 29P using the TwinSol facility at the FN tandem accelerator of the University of Notre Dame, and implantation of 29P beam in the NSL β-decay counting station]; measured β spectra, precise half-life of the decay of 29P; deduced ft value for the β transition to the ground state of 29Si, Cabibbo-Kobayashi-Maskawa matrix element Vud, Fermi to Gamow-Teller mixing ratio; evaluated half-life using present and previous experimental values. Discussed in detail corrections and uncertainties. Comparison with previous half-life measurements.
doi: 10.1103/PhysRevC.101.015501
2020OL07 Phys.Rev. C 102, 055806 (2020) O.Olivas-Gomez, A.Simon, O.Gorton, J.E.Escher, E.Churchman, P.Millican, R.Kelmar, C.S.Reingold, A.M.Clark, N.Cooper, C.Harris, S.L.Henderson, S.E.Kelly, F.Naqvi, A.Palmisano, D.Robertson, E.Stech, A.Spyrou, W.P.Tan Measurements of proton capture in the A = 100-100 mass region: Constraints on the 111In(γ, p)/(γ, n) branching point relevant to the γ process NUCLEAR REACTIONS 102Pd(p, γ)103Ag, E=4-8 MeV; 108Cd(p, γ)109In, E=3.5=7 MeV; 110Cd(p, γ)111In, E=3-6 MeV; measured Eγ, Iγ, summed γ spectra using a high efficiency total absorption spectrometer and γ-summing technique at the 10-MV FN Tandem Van de Graaff accelerator of the University of Notre Dame; deduced capture σ(E) for the ground states, total σ(E), constrain Hauser-Feshbach parameters used in TALYS 1.9. Comparison with theoretical predictions from the NON-SMOKER code, and with Hauser-Feshbach statistical calculations. Recommended (γ, p) and (γ, n) stellar photodissociation decay rates for 103Ag, 109In and 111In for T=1-10 GK. Relevance to γ process is an explosive astrophysical scenario.
doi: 10.1103/PhysRevC.102.055806
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
2019RE04 Eur.Phys.J. A 55, 77 (2019) C.S.Reingold, O.Olivas-Gomez, A.Simon, J.Arroyo, M.Chamberlain, J.Wurzer, A.Spyrou, F.Naqvi, A.C.Dombos, A.Palmisano, T.Anderson, A.M.Clark, B.Frentz, M.R.Hall, S.L.Henderson, S.Moylan, D.Robertson, M.Skulski, E.Stech, S.Y.Strauss, W.P.Tan, B.Vande Kolk High Efficiency Total Absorption Spectrometer HECTOR for capture reaction measurements RADIOACTIVITY 60Co(IT); measured Eγ, Iγ using Total Absorption Spectrometer HECTOR; deduced sum spectrum; compared with GEANT4 simulated spectrum. NUCLEAR REACTIONS 27Al(p, γ), E not given; measured Eγ, Iγ; deduced resonances, average multiplicities, summing efficiencies and resonance strengths; compared with GEANT4 simulations and with published data. Remark: Paper aimed mainly to show the possibilities of the HECTOR spectrometer.
doi: 10.1140/epja/i2019-12748-8
2017AN08 Phys.Rev. C 96, 015803 (2017) T.Anderson, M.Skulski, A.Clark, A.Nelson, K.Ostdiek, P.Collon, G.Chmiel, T.Woodruff, M.Caffee Re-measurement of the 33S (α, p)36Cl cross section for early solar system nuclide enrichment NUCLEAR REACTIONS 4He(33S, 36Cl), E=0.78-1.52 MeV/nucleon; measured 36Cl/Cl concentrations by AMS technique, integrated σ(E) at the Tandem accelerator of the NSL, University of Notre Dame. Comparison with previous experimental measurements and with Hauser-Feshbach code TALYS. Systematically lower cross sections obtained in the present work than in the originally reported ones, thus resolving the discrepancy with theoretical calculations.
doi: 10.1103/PhysRevC.96.015803
2017OS02 Phys.Rev. C 95, 055809 (2017) K.M.Ostdiek, T.S.Anderson, W.K.Bauder, M.R.Bowers, A.M.Clark, P.Collon, W.Lu, A.D.Nelson, D.Robertson, M.Skulski, R.Dressler, D.Schumann, J.P.Greene, W.Kutschera, M.Paul Activity measurement of 60Fe through the decay of 60mCo and confirmation of its half-life RADIOACTIVITY 60Fe(β-)[from Cu(p, X), E=590 MeV at PSI followed by chemical separation]; 60mCo(IT); measured Eγ, Iγ from 60mCo decay, half-life of 60Fe via the 2+ isomeric state of 60Co, number of atoms of 60Fe from 60Fe/56Fe isotopic ratios of samples using accelerator mass spectrometry (AMS) technique. Experiments performed at the university of Notre Dame. Comparison with previous half-life measurements.
doi: 10.1103/PhysRevC.95.055809
Back to query form Note: The following list of authors and aliases matches the search parameter A.M.Clark: , A.M.CLARK |