NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = A.Howard Found 72 matches. 2021HU13 Astrophys.J. 912, 59 (2021) N.J.Hubbard, C.Aa.Diget, S.P.Fox, H.O.U.Fynbo, A.M.Howard, O.S.Kirsebom, A.M.Laird, M.Munch, A.Parikh, M.Pignatari, J.R.Tomlinson New Experimental 23Na(α, p)26Mg Reaction Rate for Massive Star and Type Ia Supernova Models NUCLEAR REACTIONS 23Na(α, p), E(cm)=1-3.25 MeV; analyzed available data; deduced astrophysical reaction rates, angle integrated σ.
doi: 10.3847/1538-4357/abee91
2020HO05 Phys.Rev. C 101, 034309 (2020) A.M.Howard, S.J.Freeman, D.K.Sharp, T.Bloxham, J.A.Clark, C.M.Deibel, B.P.Kay, P.D.Parker, J.P.Schiffer, J.S.Thomas Neutron-hole strength in N=81 nuclei NUCLEAR REACTIONS 138Ba, 140Ce, 142Nd, 144Sm(p, d), E=23 MeV; 138Ba, 140Ce, 142Nd, 144Sm(3He, α), E=34 MeV; measured Ed, Id, Eα, Iα, σ(θ) using the Enge split-pole spectrograph and multi-wire gas proportional counter backed by plastic scintillator at the tandem Van de Graaff accelerator of Yale University. 137Ba, 139Ce, 141Nd, 143Sm; deduced levels, J, π, L-transfer, configurations, spectroscopic factors, proton occupancies, neutron hole strengths and centroids, summed strengths. DWBA analysis. Comparison with predictions of particle-vibration coupling calculations.
doi: 10.1103/PhysRevC.101.034309
2020KI10 Eur.Phys.J. A 56, 179 (2020) O.S.Kirsebom, A.M.Howard, M.Munch, S.Sablok, J.A.Swartz, H.O.U.Fynbo Experimental study of the 11B(p, 3α)γ reaction at Ep = 0.5-2.7 MeV
doi: 10.1140/epja/s10050-020-00183-z
2017FE07 Phys.Rev. C 96, 024613 (2017) M.Febbraro, F.D.Becchetti, R.O.Torres-Isea, J.Riggins, C.C.Lawrence, J.J.Kolata, A.M.Howard (d, n) proton-transfer reactions on 9Be, 11B, 13C, 14, 15N, and 19F and spectroscopic factors at Ed = 16 MeV NUCLEAR REACTIONS 9Be, 11B, 13C, 14,15N, 19F(d, n), E=16 MeV; measured neutron spectra, time-of-flight spectra, σ(θ) using deuterated liquid-scintillator array (UM-DSA) at the Tandem accelerator facility of University of Notre Dame. Solid and gaseous targets. Finite-range distorted-wave Born approximation (FR-DWBA) analysis with common bound-state, global, and local optical-model parameter sets. 10B, 12C, 14N, 15,16O, 20Ne; deduced levels, L-transfer, J, π, configuration, spectroscopic factors. Comparison with previous measurements and theoretical calculations.
doi: 10.1103/PhysRevC.96.024613
2016FR01 Phys.Rev. C 93, 014321 (2016) A.Fritsch, S.Beceiro Novo, D.Suzuki, W.Mittig, J.J.Kolata, T.Ahn, D.Bazin, F.D.Becchetti, B.Bucher, Z.Chajecki, X.Fang, M.Febbraro, A.M.Howard, Y.Kanada-En'yo, W.G.Lynch, A.J.Mitchell, M.Ojaruega, A.M.Rogers, A.Shore, T.Suhara, X.D.Tang, R.Torres-Isea, H.Wang One-dimensionality in atomic nuclei: A candidate for linear-chain α clustering in 14C NUCLEAR REACTIONS 4He(10Be, α), E=39.7 MeV, [secondary 10Be beam from 13C(11B, 10B), E=46 MeV primary reaction]; measured particle spectra, differential cross sections for elastic and inelastic scattering, angular distributions using the prototype active target-time projection chamber (PAT-TPC) at Notre Dame TwinSol facility. 14C; deduced levels, α-resonances, J, π, band, α-widths, L-transfers, spectroscopic factors. R-matrix analysis. Comparison with predictions of antisymmetrized molecular dynamics (AMD) theory, and evidence for a 3α-linear chain structure in 14C.
doi: 10.1103/PhysRevC.93.014321
2016GU09 Phys.Rev. C 93, 064607 (2016) V.Guimaraes, J.J.Kolata, E.F.Aguilera, A.Howard, A.Roberts, F.D.Becchetti, R.O.Torres-Isea, A.Riggins, M.Febrarro, V.Scarduelli, P.N.de Faria, D.S.Monteiro, J.F.P.Huiza, A.Arazi, J.Hinnefeld, A.M.Moro, E.S.Rossi, V.Morcelle, A.Barioni, AlanJ.Mitchell Backscattering measurement of 6He on 209Bi: Critical interaction distance NUCLEAR REACTIONS 209Bi(6He, 6He), E=12, 14, 16 MeV, [secondary 6He beam from 2H(7Li, 6He), E=32 MeV]; measured 6He spectra using silicon ΔE-E telescope, σ(θ, E) at the TwinSol facility of Notre Dame Nuclear Structure Laboratory; deduced ratio of elastic to Rutherford cross sections. Comparison with a three-body CDCC calculation, and with experimental data for 209Bi(α, α), (6Li, 6Li), (9Be, 9Be), (12C, 12C), (16O, 16O), and 208Pb(6He, 6He) reactions.
doi: 10.1103/PhysRevC.93.064607
2016MA17 Acta Phys.Pol. B47, 747 (2016) I.Marroquin, M.J.G.Borge, A.A.Ciemny, H.de Witte, L.M.Fraile, H.O.U.Fynbo, A.Garzon-Camacho, A.Howard, H.Johansson, B.Jonson, O.S.Kirsebom, G.T.Koldste, R.Lica, M.V.Lund, M.Madurga, C.Mazzocchi, C.Mihai, M.Munch, S.A.Nae, E.Nacher, A.Negret, T.Nilsson, A.Perea, J.Refsgaard, K.Riisager, E.Rapisarda, C.Sotty, M.Stanoiu, O.Tengblad, A.E.Turturica, M.V.Vedia Multi-particle Emission from 31Ar at ISOLDE RADIOACTIVITY 31Ar(β+2p), (β+p) [from Ca(p, X), E=1.4 GeV]; measured decay products, Ep, Ip, Eγ, Iγ, Eβ, Iβ. 30S, 29P; deduced energy levels, γ-ray intensities, resonance parameters.
doi: 10.5506/APhysPolB.47.747
2015HO09 Phys.Rev.Lett. 115, 052701 (2015) A.M.Howard, M.Munch, H.O.U.Fynbo, O.S.Kirsebom, K.L.Laursen, C.A.Diget, N.J.Hubbard 23Na(α, p)26Mg Reaction Rate at Astrophysically Relevant Energies NUCLEAR REACTIONS 23Na(α, p), E(cm)=1.7-2.5 MeV; measured reaction products, Ep, Ip; deduced σ(θ), σ, reaction rates. Comparison with the statistical model code NON-SMOKER.
doi: 10.1103/PhysRevLett.115.052701
2013KA04 Phys.Rev. C 87, 011302 (2013) B.P.Kay, T.Bloxham, S.A.McAllister, J.A.Clark, C.M.Deibel, S.J.Freedman, S.J.Freeman, K.Han, A.M.Howard, A.J.Mitchell, P.D.Parker, J.P.Schiffer, D.K.Sharp, J.S.Thomas Valence neutron properties relevant to the neutrinoless double-β decay of 130Te NUCLEAR REACTIONS 128,130Te(p, d), E=23 MeV; 128,130Te, 130,132Xe(d, p), E=15 MeV; 128,130Te, 130,132Xe(α, 3He), E=50 MeV; 130Te(3He, α), E=40 MeV; 132Xe(p, t), E=23 MeV; measured deuteron, proton, triton, 3He, α spectra, σ(θ) using Enge-split pole magnetic spectrograph at Yale Tandem accelerator facility. 127,129,131Te, 130,131,133Xe; deduced levels, J, π, L-transfers. 128,130Te, 130,132Xe; deduced neutron vacancies for active orbitals. Comparison with calculations within both the quasiparticle random-phase approximation and shell-model frameworks. Discussed relevance to neutrinoless double β decay of 130Te.
doi: 10.1103/PhysRevC.87.011302
2013RO10 Phys.Rev. C 87, 051305 (2013) A.Roberts, A.M.Howard, J.J.Kolata, A.N.Villano, F.D.Becchetti, P.A.DeYoung, M.Febbraro, S.J.Freeman, B.P.Kay, S.A.McAllister, A.J.Mitchell, J.P.Schiffer, J.S.Thomas, R.O.Torres-Isea Proton pair correlations and the neutrinoless double-β decay of 76Ge NUCLEAR REACTIONS 74,76Ge(3He, n), E=16 MeV; measured E(n), I(n), time-of-flight, σ(θ) for g.s. and first 2+ state using the Neutron Wall at Notre Dame. 76,78Se; deduced levels, proton pair correlations. DWBA analysis. Comparison with quasiparticle random phase approximation (QRPA) model calculations. Relevance to matrix elements for 0νββ decay of 76Ge. Systematics of ground-state cross sections on fpg-shell nuclei of A=60-90, and comparison with theoretical models. No evidence for the breaking of the BCS approximation for paired protons.
doi: 10.1103/PhysRevC.87.051305
2013SC06 Phys.Rev. C 87, 034306 (2013) J.P.Schiffer, C.R.Hoffman, B.P.Kay, J.A.Clark, C.M.Deibel, S.J.Freeman, M.Honma, A.M.Howard, A.J.Mitchell, T.Otsuka, P.D.Parker, D.K.Sharp, J.S.Thomas Valence nucleon populations in the Ni isotopes NUCLEAR REACTIONS 58,60,62,64Ni(d, p), E=10 MeV; 58,60,62,64Ni(α, 3He), (α, t), E=38 MeV; 58,60,62,64Ni(p, d), E=28 MeV; 58,60,62,64Ni(3He, d), E=18 MeV; 58,60,62,64Ni(3He, α), E=25 MeV; measured proton, deuteron, triton, 3He, α spectra, σ(θ) using Enge-split pole magnetic spectrograph at Yale tandem accelerator facility. 57,59,61,63,65Ni, 59,61,63,65Cu; deduced levels, J, π, l-transfers, spectroscopic factors. DWBA analysis. 58,60,62,64Ni; deduced neutron occupancies, proton vacancies, energy centroids of the neutron, neutron-hole, and proton single-particle excitations. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.87.034306
2013SH02 Phys.Rev. C 87, 014312 (2013) D.K.Sharp, B.P.Kay, J.S.Thomas, S.J.Freeman, J.P.Schiffer, B.B.Back, S.Bedoor, T.Bloxham, J.A.Clark, C.M.Deibel, C.R.Hoffman, A.M.Howard, J.C.Lighthall, S.T.Marley, A.J.Mitchell, T.Otsuka, P.D.Parker, K.E.Rehm, D.V.Shetty, A.H.Wuosmaa Neutron single-particle strength outside the N=50 core NUCLEAR REACTIONS 88Sr, 90Zr, 92Mo(d, p), E=15 MeV; 88Sr, 90Zr, 92Mo(α, 3He), E=50 MeV; measured proton and 3He spectra, σ(θ) using Enge-split pole magnetic spectrograph at Yale. 2H(86Kr, p), E=10 MeV/nucleon; measured proton spectra, σ(θ) using HELIOS spectrometer at ANL. 87Kr, 89Sr, 91Zr, 93Mo; deduced levels, J, π, absolute σ, L-transfers, spectroscopic factors, centroids of single-particle strengths. DWBA analysis.
doi: 10.1103/PhysRevC.87.014312
2013SU10 Phys.Rev. C 87, 054301 (2013) D.Suzuki, A.Shore, W.Mittig, J.J.Kolata, D.Bazin, M.Ford, T.Ahn, F.D.Becchetti, S.Beceiro Novo, D.Ben Ali, B.Bucher, J.Browne, X.Fang, M.Febbraro, A.Fritsch, E.Galyaev, A.M.Howard, N.Keeley, W.G.Lynch, M.Ojaruega, A.L.Roberts, X.D.Tang Resonant α scattering of 6He: Limits of clustering in 10Be NUCLEAR REACTIONS 4He(6He, 6He), (6He, 6He'), (6He, 2n)8Be, [secondary 6He beam from 7Li(d, 3He), E=29.2 MeV primary reaction], E=15 MeV; measured reactions products, 6He spectra, elastic and inelastic σ(E, θ) using PAT-TPC system at Notre Dame TwinSol facility. 4,6He, 8Be; deduced levels, cross sections for g.s. and first 2+ states. 10Be; deduced level, resonance, J, π, α width. Discussed α clustering in high-spin states. Comparison with antisymmetric molecular dynamics calculations.
doi: 10.1103/PhysRevC.87.054301
2012HO26 J.Phys.:Conf.Ser. 381, 012098 (2012) A.M.Howard, S.J.Freeman, J.P.Schiffer, T.Bloxham, J.A.Clark, C.M.Deibel, B.P.Kay, P.D.Parker, D.K.Sharp, J.S.Thomas Neutron-hole strength in the N = 81 isotone NUCLEAR REACTIONS 138Ba, 140Ce, 142Nd, 144Sm(p, d), E=23 MeV;138Ba, 140Ce, 142Nd, 144Sm(3He, α), E=34 MeV; measured light reaction products E(particle), I(particle, θ) using Enge split-pole spectrograph, position-sensitive IC and scintillator; deduced σ(θ), spectroscopic strength for specified angular momentum transfers, single-particle binding energy.
doi: 10.1088/1742-6596/381/1/012098
2012KA44 J.Phys.:Conf.Ser. 381, 012095 (2012) B.P.Kay, M.Alcorta, B.B.Back, S.I.Baker, S.Bedoor, T.Bloxham, J.A.Clark, C.M.Deibel, S.J.Freeman, C.R.Hoffman, A.M.Howard, J.C.Lighthall, S.T.Marley, A.J.Mitchell, K.E.Rehm, J.P.Schiffer, D.K.Sharp, D.V.Shetty, J.S.Thomas, A.H.Wuosmaa, S.Zhu HELIOS - progress and possibilities
doi: 10.1088/1742-6596/381/1/012095
2012KO18 Phys.Rev. C 85, 054603 (2012) J.J.Kolata, A.Roberts, A.M.Howard, D.Shapira, J.F.Liang, C.J.Gross, R.L.Varner, Z.Kohley, A.N.Villano, H.Amro, W.Loveland, E.Chavez Fusion of 124, 132Sn with 40, 48Ca NUCLEAR REACTIONS 40,48Ca(124Sn, X), (132Sn, X), E(cm)=105-165 MeV; measured evaporation residue spectra, fusion σ(E); deduced reduced fusion σ(E), fusion barriers. Inverse kinematics. Wong model and PACE2 fits. Comparison with time-dependent Hartree-Fock (TDHF) and coupled-channels Born approximation (CCBA) calculations.
doi: 10.1103/PhysRevC.85.054603
2012MC06 J.Phys.:Conf.Ser. 381, 012043 (2012) S.A.McAllister, B.P.Kay, S.J.Freeman, J.P.Schiffer, C.M.Diebel, T.Bloxham, A.M.Howard, P.D.Parker, D.K.Sharp, J.S.Thomas Constraining neutrinoless double β decay matrix elements in 130Te NUCLEAR REACTIONS 128,130Te(p, t), E=23 MeV;128,130Te(d, p), (α, α'), E=15 MeV; 128,130Te(3He, α), E=40 MeV;128,130Te(α, 3He), E=50 MeV; measured reaction products at specified (forward) angles; deduced (d, p) spectroscopic factors. Preliminary. Other reactions under analysis.
doi: 10.1088/1742-6596/381/1/012043
2012MI26 J.Phys.:Conf.Ser. 381, 012099 (2012) A.J.Mitchell, S.J.Freeman, J.P.Schiffer, J.A.Clark, C.M.Deibel, C.R.Hoffman, A.M.Howard, B.P.Kay, P.D.Parker, D.K.Sharp, J.S.Thomas Investigating trends in proton single-particle states in Z = 51 isotopes using transfer reactions NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, t), E=37.5 MeV;112,114,116,118,120,122,124Sn(3He, d), E=25 MeV; measured E(particle), I(particle, θ) using Enge split-pole spectrometer; calculated σ(θ) using DWBA; deduced spectroscopic factors, σ(θ) for specified l-transfer, occupancies of neutron orbitals. Occupation of h11/2 increases rapidly with N. Preliminary.
doi: 10.1088/1742-6596/381/1/012099
2012SC01 Phys.Rev.Lett. 108, 022501 (2012) J.P.Schiffer, C.R.Hoffman, B.P.Kay, J.A.Clark, C.M.Deibel, S.J.Freeman, A.M.Howard, A.J.Mitchell, P.D.Parker, D.K.Sharp, J.S.Thomas Test of Sum Rules in Nucleon Transfer Reactions NUCLEAR STRUCTURE 58,60,62,64Ni; calculated spectroscopic factors for neutron transfer, valence-orbit occupancies. Macfarlane-French sum rules. NUCLEAR REACTIONS Ni(α, α), E=9 MeV; Ni(d, p), E=10 MeV; Ni(p, d), E=28 MeV; Ni(3He, d), E=18 MeV; Ni(α, t), E=38 MeV; measured reaction products. 58,60,62,64Ni; deduced spectroscopic factors, neutron occupancies. DWBA calculations.
doi: 10.1103/PhysRevLett.108.022501
2012SH40 J.Phys.:Conf.Ser. 381, 012100 (2012) D.K.Sharp, B.P.Kay, S.J.Freeman, J.P.Schiffer, B.B.Back, T.Bloxham, J.A.Clark, C.M.Deibel, C.R.Hoffman, A.M.Howard, J.C.Lighthall, S.T.Marley, A.J.Mitchell, P.D.Parker, J.S.Thomas, A.H.Wuosmaa Trends in the g7/2 and h11/2 neutron single-particle energies in N = 51 isotones NUCLEAR REACTIONS 88Sr, 90Zr, 92Mo(d, p), E=15 MeV;88Sr, 90Zr, 92Mo(α, 3He), E=50 MeV; measured E(3He), I(3He, θ), Ep, Ip(θ) using Enge split-pole spectrometer; calculated σ(θ), spectroscopic factors using DWBA code PTOLEMY; deduced spectroscopic factors for specified l-transfers. 2H(86Kr, p), E=10 MeV/nucleon; measured Ep, Ip(θ) using HELIOS spectrometer; calculated σ(θ) using DWBA; deduced σ(θ).
doi: 10.1088/1742-6596/381/1/012100
2011KA27 Phys.Rev. C 84, 024325 (2011) B.P.Kay, J.P.Schiffer, S.J.Freeman, C.R.Hoffman, B.B.Back, S.I.Baker, S.Bedoor, T.Bloxham, J.A.Clark, C.M.Deibel, A.M.Howard, J.C.Lighthall, S.T.Marley, K.E.Rehm, D.K.Sharp, D.V.Shetty, J.S.Thomas, A.H.Wuosmaa Single-neutron energies outside 136Xe NUCLEAR REACTIONS 2H(136Xe, p), E=10 MeV/nucleon; measured Ep, Ip, time of flight, absolute σ, σ(θ) using Helios spectrometer at the ATLAS facility at ANL. 137Xe; deduced levels, J, π, l-transfers, spectroscopic factors, configurations. DWBA analysis of σ(θ) distributions.
doi: 10.1103/PhysRevC.84.024325
2011KA48 J.Phys.:Conf.Ser. 312, 092034 (2011) B.P.Kay, J.P.Schiffer, S.J.Freeman, B.B.Back, S.Bedoor, S.I.Baker, T.Bloxham, J.A.Clark, C.M.Deibel, C.R.Hoffman, A.M.Howard, J.C.Lighthall, S.T.Marley, K.E.Rehm, D.K.Sharp, D.V.Shetty, J.S.Thomas, A.H.Wuosmaa Study of valence neutrons in 136Xe with HELIOS NUCLEAR REACTIONS 2H, C(136Xe, p), (136Xe, d), E=5, 10 MeV/nucleon; measured E(particle), I(particle, θ), A/Q ratio using position-sensitive Si detectors, ToF using radio-frequency of ATLAS facility; deduced σ(p, θ) for specified angular momentum transfer; calculated σ(θ) for specified angular momentum transfer using DWBA code PTOLEMY.
doi: 10.1088/1742-6596/312/9/092034
2010BL06 Phys.Rev. C 82, 027308 (2010) T.Bloxham, B.P.Kay, J.P.Schiffer, J.A.Clark, C.M.Deibel, S.J.Freeman, S.J.Freedman, A.M.Howard, S.A.McAllister, P.D.Parker, D.K.Sharp, J.S.Thomas Pair correlations in the neutrinoless double-β decay candidate 130Te NUCLEAR REACTIONS 128,130Te(p, t), E=23 MeV; measured triton spectra, σ(θ). 126,128Te; deduced levels, L-transfers. Split-pole magnetic spectrograph and gas-filled focal plane detector. Comparison with data for 128,130Te(3He, n) reactions. Relevance to calculation of the matrix element for neutrinoless double-β decay of 130Te.
doi: 10.1103/PhysRevC.82.027308
2010ME07 Phys.Rev. C 82, 024308 (2010) D.Mengoni, J.J.Valiente-Dobon, A.Gadea, S.Lunardi, S.M.Lenzi, R.Broda, A.Dewald, T.Pissulla, L.J.Angus, S.Aydin, D.Bazzacco, G.Benzoni, P.G.Bizzeti, A.M.Bizzeti-Sona, P.Boutachkov, L.Corradi, F.Crespi, G.de Angelis, E.Farnea, E.Fioretto, A.Goergen, M.Gorska, A.Gottardo, E.Grodner, A.M.Howard, W.Krolas, S.Leoni, P.Mason, D.Montanari, G.Montagnoli, D.R.Napoli, A.Obertelli, R.Orlandi, T.Pawlat, G.Pollarolo, F.Recchia, A.Algora, B.Rubio, E.Sahin, F.Scarlassara, R.Silvestri, J.F.Smith, A.M.Stefanini, D.Steppenbeck, S.Szilner, C.A.Ur, P.T.Wady, J.Wrzesinski Lifetime measurements of excited states in neutron-rich 44, 46Ar populated via a multinucleon transfer reaction NUCLEAR REACTIONS 208Pb(48Ca, X)42Ar/43Ar/44Ar/45Ar/46Ar, E=310 MeV; measured Eγ, Iγ, (recoils)γ-coin, and half-lives by differential RDDS method. CLARA-PRISMA system. 44,46Ar; deduced levels, B(E2). Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.82.024308
2009ME05 Acta Phys.Pol. B40, 485 (2009) D.Mengoni, J.J.Valiente-Dobon, A.Gadea, E.Farnea, S.M.Lenzi, S.Lunardi, A.Dewald, T.Pissulla, S.Szilner, A.M.Stefanini, R.Broda, F.Recchia, A.Algora, L.Angus, S.Aydin, D.Bazzacco, G.Benzoni, P.G.Bizzeti, A.M.Bizzeti-Sona, P.Boutachkov, L.Corradi, F.Crespi, G.de Angelis, E.Fioretto, A.Gorgen, M.Gorska, A.Gottardo, E.Grodner, A.Howard, W.Krolas, S.Leoni, P.Mason, R.Menegazzo, D.Montanari, G.Montagnoli, D.R.Napoli, A.Obertelli, T.Pawlat, B.Rubio, E.Sahin, F.Scarlassara, J.F.Smith, D.Steppenbeck, C.A.Ur, P.T.Wady, J.Wrzesinski Lifetime Measurements of Excited States in Neutron-Rich Nuclei Around 48Ca NUCLEAR REACTIONS 208Pb(48Ca, X), E=310 MeV;50Ca, 51Sc, 44,45,46Ar; measured Eγ, Iγ; deduced lifetime, B(E2).
2009VA06 Phys.Rev.Lett. 102, 242502 (2009) J.J.Valiente-Dobon, D.Mengoni, A.Gadea, E.Farnea, S.M.Lenzi, S.Lunardi, A.Dewald, Th.Pissulla, S.Szilner, R.Broda, F.Recchia, A.Algora, L.Angus, D.Bazzacco, G.Benzoni, P.G.Bizzeti, A.M.Bizzeti-Sona, P.Boutachkov, L.Corradi, F.Crespi, G.de Angelis, E.Fioretto, A.Gorgen, M.Gorska, A.Gottardo, E.Grodner, B.Guiot, A.Howard, W.Krolas, S.Leoni, P.Mason, R.Menegazzo, D.Montanari, G.Montagnoli, D.R.Napoli, A.Obertelli, T.Pawlat, B.Rubio, E.Sahin, F.Scarlassara, R.Silvestri, A.M.Stefanini, J.F.Smith, D.Steppenbeck, C.A.Ur, P.T.Wady, J.Wrzesinski, E.Maglione, I.Hamamoto Lifetime Measurements of the Neutron-Rich N = 30 Isotones 50Ca and 51Sc: Orbital Dependence of Effective Charges in the fp Shell NUCLEAR REACTIONS 208Pb(48Ca, 50Ca), (48Ca, 51Sc), E=310 MeV; measured Eγ, Iγ, half-lives for first excited states using DSAM. 50Ca, 51Sc; deduced B(E2).
doi: 10.1103/PhysRevLett.102.242502
2006AL34 IEEE trans.nucl.sci. 53, 270 (2006) J.Allison, K.Amako, J.Apostolakis, H.Araujo, P.Arce Dubois, M.Asai, G.Barrand, R.Capra, S.Chauvie, R.Chytracek, G.A.P.Cirrone, G.Cooperman, G.Cosmo, G.Cuttone, G.G.Daquino, M.Donszelmann, M.Dressel, G.Folger, F.Foppiano, J.Generowicz, V.Grichine, S.Guatelli, P.Gumplinger, A.Heikkinen, I.Hrivnacova, A.Howard, S.Incerti, V.Ivanchenko, T.Johnson, F.Jones, T.Koi, R.Kokoulin, M.Kossov, H.Kurashige, V.Lara, S.Larsson, F.Lei, O.Link, F.Longo, M.Maire, A.Mantero, B.Mascialino, I.McLaren, P.Mendez Lorenzo, K.Minamimoto, K.Murakami, P.Nieminen, L.Pandola, S.Parlati, L.Peralta, J.Perl, A.Pfeiffer, M.G.Pia, A.Ribon, P.Rodrigues, G.Russo, S.Sadilov, G.Santin, T.Sasaki, D.Smith, N.Starkov, S.Tanaka, E.Tcherniaev, B.Tome, A.Trindade, P.Truscott, L.Urban, M.Verderi, A.Walkden, J.P.Wellisch, D.C.Williams, D.Wright, H.Yoshida Geant4 Developments and Applications
doi: 10.1109/TNS.2006.869826
1998UT02 Phys.Rev. C57, 2731 (1998); Erratum Phys.Rev. C58, 1354 (1998) S.Utku, J.G.Ross, N.P.T.Bateman, D.W.Bardayan, A.A.Chen, J.Gorres, A.J.Howard, C.Iliadis, P.D.Parker, M.S.Smith, R.B.Vogelaar, M.Wiescher, K.Yildiz Breakout from the Hot CNO Cycle: The 18F(p, γ) vs 18F(p, α) branching ratio NUCLEAR REACTIONS 19F(3He, t), (3He, tα), (3He, pt), E=29.8 MeV; 16O(6Li, t), (6Li, 3He), E=32 MeV; measured particle spectra, tp-, tα-coin; deduced reaction rates for 18F + p. 19F deduced levels, resonance features. Astrophysical implications.
doi: 10.1103/PhysRevC.57.2731
1996HA26 Phys.Rev. C54, 1999 (1996) K.I.Hahn, A.Garcia, E.G.Adelberger, P.V.Magnus, A.D.Bacher, N.Bateman, G.P.A.Berg, J.C.Blackmon, A.E.Champagne, B.Davis, A.J.Howard, J.Liu, B.Lund, Z.Q.Mao, D.M.Markoff, P.D.Parker, M.S.Smith, E.J.Stephenson, K.B.Swartz, S.Utku, R.B.Vogelaar, K.Yildiz Structure of 18Ne and the Breakout from the Hot CNO Cycle NUCLEAR REACTIONS, ICPND 12C(12C, 6He), E=80 MeV; 16O(3He, n), E=10.9-14.5 MeV; 20Ne(p, t), E=44, 88 MeV; measured σ(θ). 18Ne deduced levels, Γ, J, π. 14O(α, p), E(cm) ≤ 2.5 MeV; calculated astrophysical S-factor vs E, astrophysical reaction rate vs temperature.
doi: 10.1103/PhysRevC.54.1999
1996VO07 Phys.Rev. C53, 1945 (1996) R.B.Vogelaar, L.W.Mitchell, R.W.Kavanagh, A.E.Champagne, P.V.Magnus, M.S.Smith, A.J.Howard, P.D.Parker, H.A.O'Brien Constraining 26Al + p Resonances using 26Al(3He, d)27Si NUCLEAR REACTIONS 26Al(3He, d), E=20 MeV; measured σ(Ed), σ(θ); deduced implications for 26Al(p, γ) stellar reaction rate, model parameters. 27Si deduced levels, resonance, spectroscopic factors.
doi: 10.1103/PhysRevC.53.1945
1995HO25 Nucl.Instrum.Methods Phys.Res. B99, 346 (1995) M.A.Hofstee, J.C.Blackmon, A.E.Champagne, N.P.T.Bateman, P.D.Parker, K.Yildiz, B.M.Young, R.B.Vogelaar, M.S.Smith, A.J.Howard Investigating the Astrophysically Important E(x) = 2.646 MeV State in 20Na NUCLEAR REACTIONS 20Ne(3He, t), E=27 MeV; measured triton spectra, tγ-coin. 20Na level deduced Γγ/Γ.
doi: 10.1016/0168-583X(95)00307-X
1993HO10 Nucl.Instrum.Methods Phys.Res. B73, 53 (1993) Measurement of 220Rn and 222Rn Emanation Rates for Solids RADIOACTIVITY 220,222Rn(α); measured Eα, Iα; deduced emanation rates. Electrostatic precipitation rates.
doi: 10.1016/0168-583X(93)96053-F
1993HO16 Nucl.Instrum.Methods Phys.Res. A325, 224 (1993) Prototypical Search for Radioactive Superheavy Elements in Gases RADIOACTIVITY 241Am, 212,214,218Po(α); measured α-particle count vs time; deduced prototypical device application to superheavy element searches in atmosphere or isolated gases components. Electrostatic precipitation devices.
doi: 10.1016/0168-9002(93)91024-H
1992SM03 Nucl.Phys. A536, 333 (1992) M.S.Smith, P.V.Magnus, K.I.Hahn, A.J.Howard, P.D.Parker, A.E.Champagne, Z.Q.Mao A High-Resolution Study of the 20Ne(3He, t)20Na Reaction and the 19Ne(p, γ)20Na Reaction Rate NUCLEAR REACTIONS 20Ne(3He, t), E=29.7 MeV; measured triton spectra; calculated temperature dependence of stellar 19Ne(p, γ)20Na reaction rate. 20Na deduced levels, Γ. Implanted targets, magnetic spectrograph.
doi: 10.1016/0375-9474(92)90386-X
1991HO09 Nucl.Phys. A528, 298 (1991) A.J.Howard, T.S.Moise, A.E.Champagne, P.V.Magnus, M.S.Smith Measurements of Differential Cross-Section Ratios for Single-Nucleon Transfer Reaction Pairs Near A = 25 NUCLEAR REACTIONS 22Ne, 24,26Mg(3He, d), E=20.2 MeV; measured σ(Ed); 22Ne, 24,26Mg(α, t), E=34.8 MeV; measured σ(Et). 23Na, 25,27Al deduced levels, σ(Ed)/σ(Et). 24Mg(d, p), E=17.5 MeV; measured σ(Ep). 24Mg(α, 3He), E=34.8 MeV; measured σ(E(3He)). 25Mg deduced levels, σ(Ep)/σ(E(3He)).
doi: 10.1016/0375-9474(91)90091-J
1990CH41 Phys.Rev. C42, 2730 (1990) A.E.Champagne, A.J.Howard, Z.Q.Mao 22Ne(d, p)23Ne Reaction and Neutron Balance in the s Process NUCLEAR REACTIONS 22Ne(d, p), E=24.1 MeV; measured σ(θ); deduced (n, γ) mechanism, rate. 23Ne levels deduced spectroscopic factors, Γn.
doi: 10.1103/PhysRevC.42.2730
1990MA05 Nucl.Phys. A506, 332 (1990) P.V.Magnus, M.S.Smith, A.J.Howard, P.D.Parker, A.E.Champagne Measurement of 15O(α, γ)19Ne Resonance Strengths NUCLEAR REACTIONS 19F(3He, t), E=29.8 MeV; measured σ(Et), αt-coin. 19Ne levels deduced α-branching ratios. Magnetic spectrograph.
doi: 10.1016/0375-9474(90)90390-8
1989CH44 Nucl.Phys. A505, 384 (1989) A.E.Champagne, A.J.Howard, M.S.Smith, P.V.Magnus, P.D.Parker The Effect of Weak Resonances on the 25Mg(p, γ)26Al Reaction Rate NUCLEAR REACTIONS, ICPND 25Mg(3He, d), E=20.2 MeV; measured σ(θd); deduced 25Mg(p, γ) reaction rate temperature dependence. 26Al levels deduced S, Γp, resonance strengths. Enriched target.
doi: 10.1016/0375-9474(89)90382-5
1989WA19 Nucl.Phys. A499, 546 (1989) T.F.Wang, A.E.Champagne, J.D.Hadden, P.V.Magnus, M.S.Smith, A.J.Howard, P.D.Parker Proton Threshold States in 27Si and the Destruction of 26Al at Low Stellar Temperatures NUCLEAR REACTIONS 27Al(3He, t), E=22.5, 26.3 MeV; measured σ(Et); 28Si(3He, α), E=22.4 MeV; measured σ(θ). 26Mg(3He, d), E=20.2 MeV; measured σ(θ). 26Mg(α, t), E=34.8 MeV; measured σ(Et); deduced 26Al(p, γ)27Si reaction rates. 27Al, 27Si deduced levels. Enriched 26Mg target, magnetic spectrograph.
doi: 10.1016/0375-9474(89)90545-9
1986CH09 Nucl.Phys. A451, 498 (1986) A.E.Champagne, A.B.McDonald, T.F.Wang, A.J.Howard, P.V.Magnus, P.D.Parker Threshold States in 26Al Revisited NUCLEAR REACTIONS 27Al(3He, α), 25Mg(3He, d), E=20 MeV; measured σ(E), dγ-coin. 26Al deduced levels, Γp. Enriched target.
doi: 10.1016/0375-9474(86)90073-4
1985CH06 Phys.Rev. C31, 1023 (1985) T.E.Chupp, R.T.Kouzes, A.B.McDonald, P.D.Parker, T.F.Wang, A.Howard Total Width of the 5.17 MeV 1- State in 14O and the Hot-CNO Cycle NUCLEAR REACTIONS 14N(3He, t), E=29.8 MeV; measured residual, triton momentum spectra. 14O level deduced Γ, Γγ/Γ, γ-branching ratio.
doi: 10.1103/PhysRevC.31.1023
1984OS03 Nucl.Phys. A419, 115 (1984) J.L.Osborne, C.A.Barnes, R.W.Kavanagh, R.M.Kremer, G.J.Mathews, J.L.Zyskind, P.D.Parker, A.J.Howard Low-energy behavior of the 3He(α, γ)7Be cross section NUCLEAR REACTIONS, ICPND 3He(α, γ), E=165-1169 keV; measured σ(E), Eγ, γ-branching ratio. 3He(α, γ), E(cm)=947, 1255 keV; measured σ(E). Enriched target.
doi: 10.1016/0375-9474(84)90288-4
1983CH17 Nucl.Phys. A402, 159 (1983) A.E.Champagne, A.J.Howard, P.D.Parker Threshold States in 26Al (I). Experimental Investigations NUCLEAR REACTIONS 25Mg(3He, d), (3He, 3He), 26Mg(α, α'), E=20 MeV; 25Mg(d, p), E=10 MeV; 27Al(3He, α), E=8.25 MeV; 24Mg(3He, p), E=6.9 MeV; measured σ(θd), σ(θp), σ(E, Eα), σ(θ), αγ-, pγ-coin, Eγ. 26Al, 26,25Mg deduced levels, J, π, L, S. Enriched target.
doi: 10.1016/0375-9474(83)90566-3
1983CH18 Nucl.Phys. A402, 179 (1983) A.E.Champagne, A.J.Howard, P.D.Parker Threshold States in 26Al: (II). Extraction of Resonance Strengths NUCLEAR REACTIONS 25Mg(p, γ), E=386-393 keV; measured σ(E). 26Al resonances deduced Γ, resonance strengths. R-matrix analysis.
doi: 10.1016/0375-9474(83)90567-5
1982OS02 Phys.Rev.Lett. 48, 1664 (1982) J.L.Osborne, C.A.Barnes, R.W.Kavanagh, R.M.Kremer, G.J.Mathews, J.L.Zyskind, P.D.Parker, A.J.Howard Low-Energy 3He(α, γ)7Be Cross-Section Measurements NUCLEAR REACTIONS, ICPND 3He(α, γ), E(cm)=165-1170 keV; measured absolute σ vs E, γ-branching ratio; deduced zero-energy intercept. Activation technique, 3He gas target.
doi: 10.1103/PhysRevLett.48.1664
1975PA08 Nucl.Phys. A250, 309 (1975) P.D.Parker, A.J.Howard, D.R.Goosman The 38Ar(p, d)37Ar Reaction NUCLEAR REACTIONS 38Ar(p, d), E=26 MeV; measured σ(Ed, θ). 37Ar deduced levels, J, π, C2S. DWBA analysis.
doi: 10.1016/0375-9474(75)90261-4
1974HO39 Astrophys.J. 188, 131 (1974) A.J.Howard, H.B.Jensen, M.Rios, W.A.Fowler, B.A.Zimmerman Measurement and Theoretical Analysis of Some Reaction Rates of Interest in Silicon Burning NUCLEAR REACTIONS 27Al, 35Cl, 46Ti(α, n), 40Ca(α, p), 45Sc(p, n), E(cm) ≈ 4-10 MeV; measured σ. Comparison with model predictions, astrophysical implications discussed.
doi: 10.1086/152694
1973NE12 Nucl.Phys. A210, 60 (1973) 16O(p, α0)13N Cross-Section Measurements NUCLEAR REACTIONS 16O(p, α), E(cm)=5.4-9.9 MeV; measured σ(E).
doi: 10.1016/0375-9474(73)90503-4
1972HO52 Nuovo Cim. 11A, 575 (1972) A.J.Howard, R.G.Hirko, D.A.Bromley, K.Bethge, J.W.Olness A Study of 22Ne via the 20Ne(t, pγ)22Ne Reaction NUCLEAR REACTIONS 20Ne(t, pγ), E=3 MeV; measured σ(Ep, Eγ, θ(pγ)). 22Ne deduced levels, J, π.
doi: 10.1007/BF02729464
1972LI02 Nucl.Phys. A180, 1 (1972) R.A.Lindgren, R.G.Hirko, J.G.Pronko, A.J.Howard, M.W.Sachs, D.A.Bromley A Study of 23Na NUCLEAR REACTIONS 23Na(α, α'γ), 26Mg(p, αγ), Eα=16.85 MeV, Ep=14.25 MeV; measured αγ(θ), pγ(θ), Iγ. 23Na levels deduced J, branching, multipole mixing ratios. Enriched 26Mg target.
doi: 10.1016/0375-9474(72)90152-2
1971CH09 Nucl.Phys. A164, 307 (1971) J.W.Champlin, A.J.Howard, J.W.Olness Studies of 37Ar via the 36Ar(d, pγ)37Ar Reaction NUCLEAR REACTIONS 36Ar(d, pγ), E=2.800, 2.975, 3.100 MeV; measured Eγ, Iγ, pγ(θ). 37Ar deduced levels, γ-branching, J, γ-mixing(E2/M1). Enriched gas target.
doi: 10.1016/0375-9474(71)90216-8
1971HI05 Particles and Nuclei 1, 372 (1971) R.G.Hirko, R.A.Lindgren, A.J.Howard, J.G.Pronko, M.W.Sachs, D.A.Bromley Nuclear Structure Studies on 29Al NUCLEAR REACTIONS 27Al(t, p), E=3.34 MeV; measured σ(Ep, θ). 26Mg(α, pγ), E=13.82, 14 MeV; measured σ(Ep, Eγ, θ(γ), θ(pγ)). 29Al deduced levels, J, π, γ-mixing, γ-branching.
1971ME12 Phys.Rev. C4, 1778 (1971) M.C.Mermaz, C.A.Whitten, Jr., J.W.Champlin, A.J.Howard, D.A.Bromley Study of the (d, p) Reaction on 28Si, 32S, and 36Ar at E = 18.00 MeV NUCLEAR REACTIONS 28Si, 32S, 36Ar(d, p), E=18 MeV; measured σ(Ep, θ). 29Si, 33S, 37Ar deduced levels, J, π, L(n), S.
doi: 10.1103/PhysRevC.4.1778
1970HO17 Phys.Rev. C1, 1446 (1970) A.J.Howard, R.G.Hirko, D.A.Bromley, K.Bethge, J.W.Olness Studies of the Low-Lying Levels of Ne24 NUCLEAR REACTIONS 22Ne(t, pγ), E=3.3 MeV; measured σ(Ep, Eγ, θ(pγ)). 24Ne levels deduced L, J, π.
doi: 10.1103/PhysRevC.1.1446
1970HO19 Nucl.Phys. A150, 609 (1970) A.J.Howard, J.G.Pronko, R.G.Hirko Studies on the 21Ne(p, d)20Ne and 21Ne(d, p)22Ne Reactions NUCLEAR REACTIONS 21Ne(p, d), E=20.0 MeV. 21Ne(d, p), E=10.2 MeV; measured σ(Ed, θ), σ(Ep, θ). 20Ne, 22Ne deduced levels, J, π, L(n), S. Enriched gas target.
doi: 10.1016/0375-9474(70)90421-5
1970HO22 Nucl.Phys. A152, 317 (1970) A.J.Howard, J.G.Pronko, C.A.Whitten, Jr. Studies on 21Ne and 23Ne via the 20Ne(d, p)21Ne and 22Ne(d, p)23Ne Reactions NUCLEAR REACTIONS 20,22Ne(d, p), E=16.4, 12.1 MeV; measured σ(Ep, θ). 21Ne, 23Ne deduced levels, J, π, L(n), S. Enriched gas targets.
doi: 10.1016/0375-9474(70)90833-X
1970LI08 Phys.Lett. 32B, 103 (1970) R.A.Lindgren, J.G.Pronko, A.J.Howard, D.A.Bromley The Identification of Mirror State Structure in 21Na and 21Ne NUCLEAR REACTIONS 24Mg(p, α); E=17.5 MeV; measured σ(Eα, Ep), αp(θ). 21Na levels deduced J.
doi: 10.1016/0370-2693(70)90598-8
1969HO26 Phys.Rev. 184, 1094 (1969) A.J.Howard, J.G.Pronko, C.A.Whitten, Jr. Low-Lying Negative-Parity States in Ne21 NUCLEAR REACTIONS 20Ne(d, p), E = 16.4 MeV; 22Ne(p, d), E = 20 MeV; measured σ(Ep, θ), σ(Ed, θ). 21Ne deduced levels, L(n), S, J, π.
doi: 10.1103/PhysRev.184.1094
1968CH42 Bull.Am.Phys.Soc. 13, No.4, 675 HF13 (1968) J.W.Champlin, A.J.Howard, J.W.Olness Excitation-Energy Measurements on the Ar37 - K37 Mirror Pair NUCLEAR REACTIONS 36Ar(d, p), (d, n), E=2.8-3.5 MeV; measured Eγ, Iγ with GeLi detector at 0 deg and 90 deg in 37Ar, 37K.
1967AL02 Phys.Rev. 154, 1058 (1967) J.P.Allen, A.J.Howard, D.A.Bromley, J.W.Olness, E.K.Warburton Studies of Ar41 from the Ar40(d, pγ)Ar41 Reaction NUCLEAR STRUCTURE 41Ar; measured not abstracted; deduced nuclear properties.
doi: 10.1103/PhysRev.154.1058
1967HO08 Phys.Rev. 154, 1067 (1967) A.J.Howard, J.P.Allen, D.A.Bromley, J.W.Olness, E.K.Warburton Studies on the Ne22(d, pγ)Ne23 Reaction NUCLEAR STRUCTURE 23Ne; measured not abstracted; deduced nuclear properties.
doi: 10.1103/PhysRev.154.1067
1967HO10 Phys.Rev. 157, 1022(1967) A.J.Howard, J.P.Allen, D.A.Bromley, J.W.Olness, E.K.Warburton Studies of Some Low-Lying Levels of Ne21 NUCLEAR REACTIONS 20Ne(d, pγ), E= < 4 MeV; measured σ(Ep, Eγ, θ(p), θ(pγ)). 21Ne deduced levels, J, π, branching ratios, γ-multipolarity.
doi: 10.1103/PhysRev.157.1022
1965AL13 Nucl.Phys. 68, 426 (1965) J.P.Allen, A.J.Howard, D.A.Bromley, J.W.Olness The Low Levels of O19 NUCLEAR REACTIONS 18O(d, pγ)19O, E = 2.2, 2.5 MeV; measured γ, pγ-coin, γγ(θ). 19O deduced levels, J, π.
doi: 10.1016/0029-5582(65)90659-0
1965AL20 Phys.Rev. 140, B1245 (1965) J.P.Allen, A.J.Howard, D.A.Bromley, J.W.Olness Studies on F19 in the O18(p, γ)F19 Reaction NUCLEAR STRUCTURE 18O, 19F; measured not abstracted; deduced nuclear properties.
doi: 10.1103/PhysRev.140.B1245
1965HO03 Phys.Rev. 137, B32 (1965) A.J.Howard, D.A.Bromley, E.K.Warburton Studies on the Ne20(d, pγ)Ne21 Reaction NUCLEAR STRUCTURE 21Ne; measured not abstracted; deduced nuclear properties.
doi: 10.1103/PhysRev.137.B32
1964AL02 Bull. Am. Phys. Soc. 9, No. 1, 68, GC11 (1964) J.P.Allen, A.J.Howard, D.A.Bromley, J.W.Olness Character of the 3.91-MeV State in F19 NUCLEAR STRUCTURE 18O; measured not abstracted; deduced nuclear properties.
1964AL06 Bull. Am. Phys. Soc. 9, No. 4, 440, FA12 (1964) J.P.Allen, A.J.Howard, D.A.Bromley Studies on the Low-Lying Levels of 37Ar NUCLEAR STRUCTURE 37Ar; measured not abstracted; deduced nuclear properties.
1964HO01 Bull.Am.Phys.Soc. 9, No.1, 68, GC12 (1964) A.J.Howard, J.P.Allen, D.A.Bromley, J.W.Olness 2.08-MeV Level in Na23 NUCLEAR STRUCTURE 23Ne; measured not abstracted; deduced nuclear properties.
1964HO04 Bull.Am.Phys.Soc. 9, No.4, 439, FA4 (1964) γ Deexcitation Studies on the Low Levels of 23Ne NUCLEAR STRUCTURE 23Ne; measured not abstracted; deduced nuclear properties.
1963HO02 Bull.Am.Phys.Soc. 8, No.1, 47, NA1 (1963) A.J.Howard, D.A.Bromley, E.K.Warburton γ-De-Excitation Studies on the Low Levels of the Mass-21 System NUCLEAR STRUCTURE 21Ne, 21Na; measured not abstracted; deduced nuclear properties.
1963HO10 Thesis, Yale University (1963) Studies on the Mass 21 System NUCLEAR STRUCTURE 21Ne, 21Na; measured not abstracted; deduced nuclear properties.
1963MC01 Bull.Am.Phys.Soc. 8, No.1, 47, NA3 (1963) C.L.McClelland, J.Lowe, A.J.Howard Lifetime of the 1st-Excited State of Ne23 NUCLEAR STRUCTURE 23Ne; measured not abstracted; deduced nuclear properties.
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