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NSR database version of July 31, 2015.

Search: Author = W.A.Richter

Found 53 matches.

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2015SW01     Phys.Rev. C 91, 034317 (2015)

J.A.Swartz, B.A.Brown, P.Papka, F.D.Smit, R.Neveling, E.Z.Buthelezi, S.V.Fortsch, M.Freer, Tz.Kokalova, J.P.Mira, F.Nemulodi, J.N.Orce, W.A.Richter, G.F.Steyn

Spectroscopy of narrow, high-lying, low-spin states in 20Ne

NUCLEAR REACTIONS 22Ne(p, t), E=60 MeV; measured triton spectra, σ(θ) using QDD magnetic spectrometer at iThemba Labs. 20Ne; deduced levels, J, π, possible 5α cluster state, isospin T=2 states in 20Ne, 20O and 20F. Comparison of angular distributions with calculations using FRESCO code, and structure data with shell-model calculations using OXBASH code.

doi: 10.1103/PhysRevC.91.034317
Data from this article have been entered in the XUNDL database. For more information, click here.


2014BR10     Phys.Rev. C 89, 062801 (2014)

B.A.Brown, W.A.Richter, C.Wrede

Shell-model studies of the astrophysical rapid-proton-capture reaction 30P(p, γ)31S

NUCLEAR STRUCTURE 31S; calculated levels above 5.9 MeV, J, π, proton widths, spectroscopic factors. Comparison with experimental and evaluated data.

NUCLEAR REACTIONS 30P(p, γ)31S, T=0.1-1 GK; calculated thermonuclear reaction rates for negative and positive parity final states. Comparison with other calculations. Discussed large uncertainties in calculating the reaction rate due to non-observation of predicted 1/2- states in astrophysically significant resonance region.

doi: 10.1103/PhysRevC.89.062801


2014PA50     Eur.Phys.J. A 50, 158 (2014)

P.Papka, J.F.Sharpey-Schafer, B.A.Brown, T.S.Dinoko, E.A.M.A.Khaleel, E.A.Lawrie, J.J.Lawrie, K.C.W.Li, S.N.T.Majola, W.A.Richter, O.Shirinda, M.A.Stankiewicz, P.Vymers, M.Wiedeking

High-resolution two-proton stripping to 2p-1h 7/2- states via the 59Co(3He, n γ)61Cu reaction

NUCLEAR REACTIONS 59Co(3He, nγ), E=22.5 MeV; measured Eγ, Iγ, nγ-coin using AFRODITE escape-suppressed spectrometer, HPGe Clover detectors in BGO shields, neutrons using NE102A plastic scintillators; deduced γ-ray spectra, coincidence n-γ spectra, gated γ spectra, population strengths, branching ratio, levels, J, π, γ transitions, single-proton states outside 60Ni.

doi: 10.1140/epja/i2014-14158-x
Data from this article have been entered in the XUNDL database. For more information, click here.


2013JE04     Phys.Rev. C 87, 064301 (2013)

D.G.Jenkins, M.Bouhelal, S.Courtin, M.Freer, B.R.Fulton, F.Haas, R.V.F.Janssens, T.L.Khoo, C.J.Lister, E.F.Moore, W.A.Richter, B.Truett, A.H.Wuosmaa

γ-ray spectroscopy of the A=23 T=1/2 nuclei 23Na and 23Mg: High-spin states, mirror symmetry, and applications to nuclear astrophysical reaction rates

NUCLEAR REACTIONS 12C(12C, p), E=16 MeV; 12C(12C, n), E=22 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), level half-lives by DSAM using Gammasphere array at ATLAS-ANL facility. 23Na, 23Mg; deduced high-spin levels, J, π, bands, multipolarity, mirror energy differences, proton unbound states. Comparison to Shell-model calculations using PSPDF interaction. 22Ne(p, γ)23Mg; 22Ne(p, γ)23Na; discussed proton unbound states, Gamow window and impact on astrophysical applications.

doi: 10.1103/PhysRevC.87.064301
Data from this article have been entered in the XUNDL database. For more information, click here.


2013RI05     Phys.Rev. C 87, 065803 (2013)

W.A.Richter, B.A.Brown

Shell-model studies of the astrophysical rp reaction 29P(p, γ)30S

NUCLEAR REACTIONS 29Si(d, p)30Si, E not given; calculated spectroscopic factors using the shell-model with USDA and USDB interactions. 29P(p, γ)30S at T9<10; calculated total rp reaction rates. Comparison with experimental data.

NUCLEAR STRUCTURE 30S, 31Si; calculated levels, resonances, J, π, level half-lives, gamma and proton widths, c coefficients of IMME for T=1 states of 30P, 30Si and 30S, resonance strengths, spectroscopic factors. Shell-model with USDA and USDB interactions, and IMME. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.065803


2012BR13     J.Phys.:Conf.Ser. 337, 012003 (2012)

B.A.Brown, W.A.Richter

Applications of the USD Hamiltonians to rapid-proton capture rates for sd-shell nuclei

NUCLEAR STRUCTURE 26Si; calculated levels, J, π. Compared with 26Si, 26Mg data.

NUCLEAR REACTIONS 25Al(p, γ), E≈10 keV-3 MeV; calculated resonance capture reaction rate, contribution of individual states. Compared USD, USDA, USDB.

doi: 10.1088/1742-6596/337/1/012003


2012RI02     Phys.Rev. C 85, 045806 (2012)

W.A.Richter, B.A.Brown

Shell-model studies of the rp reaction 35Ar(p, γ)36K

NUCLEAR STRUCTURE 36K, 36Cl; analyzed and calculated levels, J, π, half-lives, spectroscopic factors, widths using isobaric mass multiplet equation (IMME), known energies of the T=1 analog states, and shell-model calculations based on USDA-CDPN and USDB-CDPN interactions. 36K; reassignment of Jπ for some levels.

NUCLEAR REACTIONS 35Cl(d, p)36Cl; calculated spectroscopic factors from shell model based on USDA-CDPN and USDB-CDPN. Comparison with experimental data. 35Ar(p, γ)36K; calculated rp reaction rates.

doi: 10.1103/PhysRevC.85.045806


2012RI07     Prog.Theor.Phys.(Kyoto), Suppl. 196, 340 (2012)

W.A.Richter, B.A.Brown

Calculation of rp-Process Rates in the sd Shell via the Nuclear Shell Model

NUCLEAR STRUCTURE 36K; calculated energy levels, J, π. Isobaric Mass Multiplet Equation calculations.

NUCLEAR REACTIONS 35Ar(p, γ)36K, E<100 keV; calculated rp process reaction rate vs. temperature.

doi: 10.1143/PTPS.196.340


2012RI10     J.Phys.:Conf.Ser. 381, 012113 (2012)

W.A.Richter, B.A.Brown

Nuclear structure studies in the 0s1d shell applied to astrophysical rp-process calculations

NUCLEAR STRUCTURE 30S; calculated levels, J, π using isobaric mass multiplet equation and T=1 analogue states binding energy.

NUCLEAR REACTIONS 29P, 35Ar(p, γ), E≈10 keV-1 MeV; calculated rp reaction rate, γ decay T1/2. 36K(p, γ); calculated reaction rates using shell model with USDA and USDB interactions.

doi: 10.1088/1742-6596/381/1/012113


2011RI03     Prog.Part.Nucl.Phys. 66, 283 (2011)

W.A.Richter, B.A.Brown, A.Signoracci, M.Wiescher

Shell-model studies of the rp reaction 25Al(p, γ)26Si

NUCLEAR REACTIONS 25Al(p, γ)26Si, E<150 keV; calculated reaction rates and uncertainties.

NUCLEAR STRUCTURE 26Si; calculated energy levels, J, π, spectroscopic factors. USDA and USDB interaction.

doi: 10.1016/j.ppnp.2011.01.021


2011RI06     Phys.Rev. C 83, 065803 (2011)

W.A.Richter, B.A.Brown, A.Signoracci, M.Wiescher

Properties of 26Mg and 26Si in the sd shell model and the determination of the 25Al(p, γ)26Si reaction rate

NUCLEAR REACTIONS 25Al(p, γ)26Si, E not given; calculated resonance-capture rate, Γg, Γp using sd-shell model with USD, USDA and USDB Hamiltonians. Comparison with experimental data. Astrophysical implications for novae and x-ray bursts.

NUCLEAR STRUCTURE 26Si, 26Mg; calculated level energies, resonance energies, J, π, Γg, Γp, spectroscopic factors using sd-shell model and isobaric-mass-multiplet equation (IMME). Comparison with experimental data.

doi: 10.1103/PhysRevC.83.065803


2011RI09     Phys.Rev. C 84, 059802 (2011)

W.A.Richter, B.A.Brown, A.Signoracci, M.Wiescher

Reply to "Comment on 'Properties of 26Mg and 26Si in the sd shell model and the determination of the 25Al(p, γ)26Si reaction rate'"

NUCLEAR REACTIONS 25Al(p, γ)26Si; analyzed and revised reaction rates using updated level and resonance energy.

doi: 10.1103/PhysRevC.84.059802


2010KA39     Nucl.Phys. A848, 110 (2010)

S.Karataglidis, K.R.Henninger, W.A.Richter, K.Amos

Proton scattering observables from Skyrme-Hartree-Fock densities

NUCLEAR REACTIONS 28Si(p, p), E=65, 200 MeV; 32S(p, p), E=29.6, 65 MeV; 40Ar(p, p), E=65 MeV; 40,42,44,48Ca(p, p), E=65 MeV; calculated analyzing powers; 34S(p, p), E=29.8 MeV; 36S(p, p), E=28 MeV; 38S(p, p), E=39 MeV; 40S(p, p), E=30 MeV; 36Ar(p, p), E=33 MeV; 38Ar(p, p), E=33, 65 MeV; 42,44Ar(p, p), E=33 MeV; 46,50,52,54Ca(p, p), E=65 MeV; calculated σ(θ). Shell and Skyrme-Hartree-Fock models. Comparison with data.

doi: 10.1016/j.nuclphysa.2010.08.018


2010PE15     Phys.Rev. C 82, 064305 (2010)

S.M.Perez, W.A.Richter, B.A.Brown, M.Horoi

Magnetic moments of T=3/2 mirror pairs

NUCLEAR MOMENTS 43V, 43Ca, 45Sc, 45Cr, 47Mn, 47Ti, 49Fe, 49V, 51Co, 51Cr, 53Ni, 53Mn; analyzed magnetic moments, γp and γn values of T=3/2 proton-rich nuclei in fp shell by using experimental values for their neutron-rich mirror nuclei. 19Na, 19O, 21F, 21Mg, 23Al, 23Ne, 25Na, 25Si, 27P, 27Mg, 29Al, 29S, 31Cl, 31Si, 33P, 33Ar, 35K, 35S, 37Cl, 37Ca; analyzed gp and γn values of T=3/2 mirror nuclei in sd shell. Shell model calculations.

doi: 10.1103/PhysRevC.82.064305


2009RI10     Phys.Rev. C 80, 034301 (2009)

W.A.Richter, B.A.Brown

26Mg observables for the USDA and USDB Hamiltonians

NUCLEAR STRUCTURE 26Mg; calculated levels, J, π, half-lives, B(M1), B(E2), B(E4), electron scattering form factors using universal sd-shell interactions A and B (USDA, USDB). Comparison with experimental data.

RADIOACTIVITY 26Na(β-); calculated B(GT) using the USDA, USDB, and USD interactions and compared with experimental values.

doi: 10.1103/PhysRevC.80.034301


2008KI13     Nucl.Phys. A807, 119 (2008)

Y.J.Kim, K.Amos, S.Karataglidis, W.A.Richter

Microscopic model analyses of proton scattering from 12C, 20Ne, 24Mg, 28Si and 40Ca

NUCLEAR REACTIONS 12C, 20Ne, 24Mg, 28Si, 40Ca(polarized p, p), (polarized p, p'), E=35-250 MeV; analyzed elastic and inelastic σ, analyzing powers using a g-folding approach and DWBA.

doi: 10.1016/j.nuclphysa.2008.04.006


2008PE13     Phys.Rev. C 77, 064311 (2008)

S.M.Perez, W.A.Richter, B.A.Brown, M.Horoi

Correlations between magnetic moments and β decays of mirror nuclei

NUCLEAR STRUCTURE 11B, 11,13C, 13,15N, 15,17O, 17,19F, 19,21Ne, 21,23Na, 23,25Mg, 25,27Al, 27,29Si, 29,31P, 31,33S, 33,35Cl, 35,37Ar, 37,39K, 39,41Ca, 41,43Sc, 43,45Ti, 45,47V, 47,49Cr, 49,51Mn, 51,53Fe, 53,55Co, 55,57Ni, 57Cu; calculated magnetic moments, β-decay half-lives, gyromagnetic ratios.

doi: 10.1103/PhysRevC.77.064311


2008RI07     Phys.Rev. C 78, 064302 (2008)

W.A.Richter, S.Mkhize, B.A.Brown

sd-shell observables for the USDA and USDB Hamiltonians

NUCLEAR STRUCTURE 23,25Ne, 30,31Na, 27,29,31Mg; calculated magnetic moments. USDA and USDB Shell Model Calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.78.064302


2006AM01     Phys.Rev.Lett. 96, 032503 (2006)

K.Amos, W.A.Richter, S.Karataglidis, B.A.Brown

Proton Reaction Cross Sections as Measures of the Spatial Distributions of Neutrons in Exotic Nuclei

NUCLEAR STRUCTURE A=28-58; calculated proton and neutron densities, radii; deduced optical model parameters, proton scattering σ.

NUCLEAR REACTIONS 40Ar(p, p), E=65 MeV; 58Ni(p, p), E=200 MeV; calculated σ(θ), Ay(θ). Comparison with data.

doi: 10.1103/PhysRevLett.96.032503


2006BR18     Phys.Rev. C 74, 034315 (2006)

B.A.Brown, W.A.Richter

New "USD" Hamiltonians for the sd shell

NUCLEAR STRUCTURE 26Al, 26Mg, 26Na, 26Ne, 26F, 26O; calculated levels, J, π, β-decay properties. Comparison with data.

doi: 10.1103/PhysRevC.74.034315


2006ZE01     Phys.Rev. C 74, 024309 (2006)

R.G.T.Zegers, H.Akimune, S.M.Austin, D.Bazin, A.M.van den Berg, G.P.A.Berg, B.A.Brown, J.Brown, A.L.Cole, I.Daito, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.E.Howard, M.Itoh, J.Janecke, T.Kawabata, K.Kawase, M.Kinoshita, T.Nakamura, K.Nakanishi, S.Nakayama, S.Okumura, W.A.Richter, D.A.Roberts, B.M.Sherrill, Y.Shimbara, M.Steiner, M.Uchida, H.Ueno, T.Yamagata, M.Yosoi

The (t, 3He) and (3He, t) reactions as probes of Gamow-Teller strength

NUCLEAR REACTIONS 26Mg(t, 3He), E=115 MeV/nucleon; 26Mg(3He, t), E=140 MeV/nucleon; measured σ(E, θ); deduced Gamow-Teller transition strengths. Comparison with model predictions.

doi: 10.1103/PhysRevC.74.024309
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1997.
Data from this article have been entered in the XUNDL database. For more information, click here.


2005BL15     Phys.Rev.Lett. 94, 232501 (2005); Erratum Phys.Rev.Lett. 94, 249901 (2005)

B.Blank, A.Bey, G.Canchel, C.Dossat, A.Fleury, J.Giovinazzo, I.Matea, N.Adimi, F.De Oliveira, I.Stefan, G.Georgiev, S.Grevy, J.C.Thomas, C.Borcea, D.Cortina, M.Caamano, M.Stanoiu, F.Aksouh, B.A.Brown, F.C.Barker, W.A.Richter

First Observation of 54Zn and its Decay by Two-Proton Emission

NUCLEAR REACTIONS Ni(58Ni, X), E=74.5 MeV/nucleon; measured fragment yields; deduced evidence for 54Zn.

RADIOACTIVITY 54Zn(2p) [from Ni(58Ni, X)]; measured Ep, T1/2, two-proton decay branching ratio. Comparison with model predictions.

doi: 10.1103/PhysRevLett.94.232501
Data from this article have been entered in the XUNDL database. For more information, click here.


2005BR40     Phys.Rev. C 72, 057301 (2005)

B.A.Brown, W.A.Richter

Magic numbers in the neutron-rich oxygen isotopes

NUCLEAR STRUCTURE 17,18,19,20,21,22,23,24,25,26,27,28O; calculated, analyzed level energies, shell features.

doi: 10.1103/PhysRevC.72.057301


2003BR19     Nucl.Phys. A719, 177c (2003)

B.A.Brown, R.Clement, H.Schatz, J.Giansiracusa, W.A.Richter, M.Hjorth-Jensen, K.-L.Kratz, B.Pfeiffer, W.B.Walters

Nuclear structure theory for the astrophysical rp-process and r-process

NUCLEAR STRUCTURE A=40-80; calculated displacement energies. Z=29-38; calculated one- and two-proton separation energies. 130Cd, 129Ag, 128Pd, 127Rh, 126Ru, 125Tc, 124Mo, 123Nb, 122Zr; calculated level-mixing features, β-decay T1/2.

doi: 10.1016/S0375-9474(03)00914-X


2003CL07     Nucl.Phys. A718, 617c (2003)

R.R.C.Clement, W.Benenson, B.A.Brown, W.A.Richter, H.Schatz, B.M.Sherrill, A.Volya

Sensitivities of rp-process calculations to nuclear mass uncertainties

doi: 10.1016/S0375-9474(03)00903-5


2003RI02     Phys.Rev. C 67, 034317 (2003)

W.A.Richter, B.A.Brown

Nuclear charge densities with the Skyrme Hartree-Fock method

NUCLEAR STRUCTURE 12C, 15N, 16O, 27Al, 28,29,30Si, 31P, 32,34,36S, 40Ar, 40,48Ca, 48,50Ti, 50,52,54Cr, 54,56,58Fe, 59Co, 58,60,62,64Ni, 63,65Cu, 88Sr, 90Zr, 92Mo, 204Hg, 208Pb; calculated charge density distributions, radii. Skyrme-Hartree-Fock approach, comparisons with electron scattering data.

doi: 10.1103/PhysRevC.67.034317


2002BR01     Phys.Rev. C65, 014612 (2002)

B.A.Brown, S.Typel, W.A.Richter

Interaction Cross Sections for Light Neutron-Rich Nuclei

NUCLEAR REACTIONS 12C(α, X), (6He, X), (8He, X), (6Li, X), (7Li, X), (8Li, X), (9Li, X), (11Li, X), (7Be, X), (8Be, X), (9Be, X), (10Be, X), (11Be, X), (12Be, X), (14Be, X), (8B, X), (10B, X), (11B, X), (12B, X), (13B, X), (14B, X), (15B, X), (17B, X), (19B, X), (9C, X), (10C, X), (11C, X), (12C, X), (13C, X), (14C, X), (15C, X), (16C, X), (17C, X), (18C, X), (19C, X), (20C, X), (12N, X), (13N, X), (14N, X), (15N, X), (16N, X), (17N, X), (18N, X), (19N, X), (20N, X), (21N, X), (22N, X), (23N, X), (13O, X), (14O, X), (15O, X), (16O, X), (17O, X), (18O, X), (19O, X), (20O, X), (21O, X), (22O, X), (23O, X), (24O, X), (17F, X), (18F, X), (19F, X), (20F, X), (21F, X), (22F, X), (23F, X), (24F, X), (25F, X), (26F, X), (17Ne, X), (18Ne, X), (19Ne, X), (20Ne, X), (21Ne, X), (22Ne, X), (23Ne, X), (24Ne, X), (25Ne, X), (26Ne, X), (27Ne, X), (28Ne, X), (29Ne, X), (20Na, X), (21Na, X), (22Na, X), (23Na, X), (24Na, X), (25Na, X), (26Na, X), (27Na, X), (28Na, X), (29Na, X), (30Na, X), (31Na, X), (32Na, X), (20Mg, X), (21Mg, X), (22Mg, X), (23Mg, X), (24Mg, X), (25Mg, X), (26Mg, X), (27Mg, X), (28Mg, X), (29Mg, X), (30Mg, X), (31Mg, X), (32Mg, X), E not given; calculated interaction σ. Glauber model, comparison with data.

doi: 10.1103/PhysRevC.65.014612


2002BR15     Phys.Rev. C65, 045802 (2002)

B.A.Brown, R.R.C.Clement, H.Schatz, A.Volya, W.A.Richter

Proton Drip-Line Calculations and the rp Process

NUCLEAR STRUCTURE A=41-75; calculated one- and two-proton separation energies for proton-rich isotopes. Implications for astrophysical rp process discussed.

doi: 10.1103/PhysRevC.65.045802


2000BR29     Phys.Lett. 483B, 49 (2000)

B.A.Brown, W.A.Richter, R.Lindsay

Displacement Energies with the Skyrme Hartree-Fock Method

NUCLEAR STRUCTURE A=7-60; calculated binding and Coulomb displacement energies. Comparison with data, discussion of Nolen-Schiffer anomaly.

doi: 10.1016/S0370-2693(00)00589-X


2000CO29     Phys.Rev. C62, 064605 (2000)

A.A.Cowley, G.F.Steyn, S.S.Dimitrova, P.E.Hodgson, G.J.Arendse, S.V.Fortsch, G.C.Hillhouse, J.J.Lawrie, R.Neveling, W.A.Richter, J.A.Stander, S.M.Wyngaardt

Multistep Direct Mechanism in the (p(pol), 3He) Inclusive Reaction on 59Co and 93Nb at an Incident Energy of 100 MeV

NUCLEAR REACTIONS 59Co, 93Nb(polarized p, 3He), E=100 MeV; measured σ(E, θ), Ay(θ); deduced one-step, multistep process contributions, other reaction mechanism features. Comparison with model predictions.

doi: 10.1103/PhysRevC.62.064605
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0443.


1999CH50     Nucl.Phys. (Supplement) A654, 1051c (1999)

M.B.Chadwick, D.T.L.Jones, G.J.Arendse, A.A.Cowley, W.A.Richter, J.J.Lawrie, R.T.Newman, J.V.Pilcher, F.D.Smit, G.F.Steyn, J.W.Koen, J.A.Stander

Nuclear Interaction Cross Sections for Proton Radiotherapy

NUCLEAR REACTIONS 12C(p, pX), (p, dX), E=150 MeV; 16O(p, αX), (p, tX), E=200 MeV; measured σ(E, θ). 12C, 16O(p, pX), E=200 MeV; calculated proton spectra, σ(θ). 16O(p, X)7Li/7Be/9Be/10Be/10B/11B/10C/11C/14C/13N/14O/15O, E ≈ 5-250 MeV; calculated production σ.

doi: 10.1016/S0375-9474(00)88598-X


1998BR30     Phys.Rev. C58, 2099 (1998)

B.A.Brown, W.A.Richter

Shell-Model Plus Hartree-Fock Calculations for the Neutron-Rich Ca Isotopes

NUCLEAR STRUCTURE 47,48,49,50,51,52,53,54,55,56,57,58,59,60Ca; calculated binding energies, levels, J, π. 48Ca calculated electron scattering form factors. Shell model plus Hartree-Fock approach.

doi: 10.1103/PhysRevC.58.2099


1997CO05     Phys.Rev. C55, 1843 (1997)

A.A.Cowley, G.J.Arendse, G.F.Steyn, J.A.Stander, W.A.Richter, S.S.Dimitrova, P.Demetriou, P.E.Hodgson

Inclusive (p, 3He) Reactions on 59Co and 197Au at Incident Energies of 120, 160, and 200 MeV

NUCLEAR REACTIONS 59Co, 197Au(p, 3He), E=120, 160, 200 MeV; measured σ(θ) vs E; deduced multi-step mechanisms role. Statistical multi-step direct reaction theory.

doi: 10.1103/PhysRevC.55.1843
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0507.


1996BR15     Phys.Rev. C54, 673 (1996)

B.A.Brown, W.A.Richter

Neutron Halos in the Na Isotopes

NUCLEAR STRUCTURE 20,21,22,23,24,25,26,27,28,29,30,31,32Na; calculated nucleon rms radii, higher mass isotopes included out to drip lines; deduced intruder states role, neutron drip line prediction related features. Spherical Hartree-Fock model, different density-dependent Skyrme interactions.

doi: 10.1103/PhysRevC.54.673


1996CO12     Phys.Rev. C54, 778 (1996)

A.A.Cowley, G.J.Arendse, J.W.Koen, W.A.Richter, J.A.Stander, G.F.Steyn, P.Demetriou, P.E.Hodgson, Y.Watanabe

Inclusive (p, α) Reactions on 27Al, 59Co, and 197Au at Incident Energies of 120, 160, and 200 MeV

NUCLEAR REACTIONS 27Al, 59Co, 197Au(p, α), E=120, 160, 200 MeV; measured σ(Eα, θ); deduced higher-step contributions role. Multi-step DWBA analysis.

doi: 10.1103/PhysRevC.54.778
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0508.


1996NE05     Phys.Rev. C54, 1773 (1996); Erratum Phys.Rev. C55, 1605 (1997)

R.T.Newman, R.W.Fearick, S.M.Perez, D.G.Aschman, K.Bharuth-Ram, W.A.Richter, F.D.Smit, V.M.Tshivhase, T.S.Volkwyn

0f7/2 Proton Transfer on 55Mn

NUCLEAR REACTIONS 55Mn(d, 3He), (d, d), E=46 MeV; measured σ(θ); deduced opptical model parameters. 54Cr deduced levels, J, spectroscopic factors. 55Mn(α, t), E not given; analyzed data. 56Fe levels deduced spins, spectroscopic factors. Spectroscopic sum rules analysis.

doi: 10.1103/PhysRevC.54.1773


1996RI11     Phys.Rev. C54, 1756 (1996)

W.A.Richter, S.W.Steyn, A.A.Cowley, J.A.Stander, J.W.Koen, R.Lindsay, G.C.Hillhouse, R.E.Julies, J.J.Lawrie, J.V.Pilcher, P.E.Hodgson

Inclusive (p, p') Reactions on Nuclei in the Mass Range 115 to 181 at Incident Energies from 120 to 200 MeV

NUCLEAR REACTIONS 115In, 167Er, 173Yb, 181Ta(p, p'X), E=120, 150, 175, 200 MeV; 141Pr(p, p'X), E=120, 200 MeV; measured inclusive σ(E, θ); deduced reaction mechanism. Statistical multistep direct theory analysis.

doi: 10.1103/PhysRevC.54.1756
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0513.


1995CO25     Phys.Lett. 359B, 300 (1995)

A.A.Cowley, G.J.Arendse, J.A.Stander, W.A.Richter

Distortion in Proton-Knockout Reactions

NUCLEAR REACTIONS 208Pb(p, 2p), E=204 MeV; measured yield vs total energy, σ(θ, Ep). 208Pb deduced proton knock-out spectroscopic factors.

doi: 10.1016/0370-2693(95)01028-O
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0315.


1995RI05     Nucl.Phys. A586, 445 (1995); Erratum Nucl.Phys. A596, 716 (1996)

W.A.Richter, M.G.Van der Merwe, B.Brown

Shell-Model Calculations for Neutron-Rich Nuclei in the 0f1p Shell

NUCLEAR STRUCTURE 51,52,53,54,55,56,57,58,59,60Ca, 52,53,54,55,56,57,58,59,60,61Sc, 54,55,56,57,58,59,60,61,62Ti, 59,60,61,62,63V, 58,60,61,62,63,64Cr, 62,63,64,65Mn, 63,64,65,66Fe; calculated binding energies, mass defects. 51,50,52Ca, 52,53Ti, 51,52Sc; calculated levels. Shell model, empirical effective interaction.

doi: 10.1016/0375-9474(94)00802-T


1994RI01     Phys.Rev. C49, 1001 (1994)

W.A.Richter, A.A.Cowley, G.C.Hillhouse, J.A.Stander, J.W.Koen, S.W.Steyn, R.Lindsay, R.E.Julies, J.J.Lawrie, J.V.Pilcher, P.E.Hodgson

Preequilibrium (p, p') Measurements and Calculations for 90Zr and Neighboring Nuclei for Incident Energies up to 200 MeV

NUCLEAR REACTIONS 89Y, 90Zr, 92,94,96,98Mo(p, p'), E=120, 160, 200 MeV; measured inclusive σ(E, θ); deduced reaction mechanism. Statistical multi-step, direct theory analysis.

doi: 10.1103/PhysRevC.49.1001
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0179.


1994RI08     Nucl.Phys. A577, 585 (1994)

W.A.Richter, M.G.Van der Merwe, R.E.Julies, B.A.Brown

Tests and Predictions of New Effective Interactions in the 0f1p Shell

NUCLEAR STRUCTURE 42,44,45,43Sc, 41,42,43,44,45,46,47,48,49Ca, 44,45Ti; calculated nucleon transfer spectroscopic factors in some cases, B(λ). New effective interaction.

doi: 10.1016/0375-9474(94)90934-2


1994VA26     Nucl.Phys. A579, 173 (1994)

M.G.van der Merwe, W.A.Richter, B.A.Brown

Effective Interactions for A = 41-66 Nuclei

NUCLEAR STRUCTURE 49,52Ca, 51V, 52Sc, 52Ti, 53Mn, 56Fe; calculated levels. 41,42,43,44,45,47,49,51Ca, 41,43,44,45,46,47,48,49,50,51,52Sc, 45,46,47,48,49,50,51Ti, 46,47,48,49,50,51,52,53V, 51,52,53,54Cr, 51,52,53,54,55Mn, 53,54,55,56Fe, 55,56,57,58Co, 57,58,59,60,61,62,63,65Ni, 58,59,60Cu; calculated μ, electric quadrupole moments. Shell model, effective interactions.

doi: 10.1016/0375-9474(94)90800-1


1993OL05     Z.Phys. A347, 99 (1993)

L.D.Olivier, W.A.Richter, J.A.Stander, J.W.Koen

Properties of Levels in 22Ne

NUCLEAR REACTIONS 19F(α, pγ), E=12 MeV; measured γp-coin. 22Ne deduced levels, T1/2, J, π, δ, γ branching ratios, B(λ). Shell model comparison.


1992RI06     Phys.Rev. C46, 1030 (1992)

W.A.Richter, A.A.Cowley, R.Lindsay, J.J.Lawrie, S.V.Fortsch, J.V.Pilcher, R.Bonetti, P.E.Hodgson

Statistical Multistep Direct Calculations for (p, p') Continuum Spectra up to 200 MeV

NUCLEAR REACTIONS 100Mo(p, p'), E=100-200 MeV; measured σ(θ, Ep'). 58Ni, 197Au(p, p'), E=100-200 MeV; analyzed σ(θ, Ep'). Statistical multi-step direct theory.

doi: 10.1103/PhysRevC.46.1030
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0535.


1991CO03     Phys.Rev. C43, 678 (1991)

A.A.Cowley, A.van Kent, J.J.Lawrie, S.V.Fortsch, D.M.Whittal, J.V.Pilcher, F.D.Smit, W.A.Richter, R.Lindsay, I.J.van Heerden, R.Bonetti, P.E.Hodgson

Preequilibrium Proton Emission Induced by 80 and 120 MeV Protons Incident on 90Zr

NUCLEAR REACTIONS 90Zr(p, p'), E=80, 120 MeV; measured σ(Ep', θp'); deduced reaction mechanism, effective interaction strength. Phenomenological parametrization.

doi: 10.1103/PhysRevC.43.678
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0180.


1991RI04     Nucl.Phys. A523, 325 (1991)

W.A.Richter, M.G.Van Der Merwe, R.E.Julies, B.A.Brown

New Effective Interactions for the 0f1p Shell

NUCLEAR STRUCTURE 43,45,48,49,47,41Ca, 43,44,45Sc, 45Ti; calculated levels, μ, quadrupole moment. Shell model, new effective interactions.

doi: 10.1016/0375-9474(91)90007-S


1990ZH07     Phys.Rev. C42, 1120 (1990)

L.Zhao, B.A.Brown, W.A.Richter

Shell-Model Calculation for Two-Neutrino Double Beta Decay of 48Ca

RADIOACTIVITY 48Ca(2β); calculated decay T1/2. 48Ca, 48Ti; calculated Gamow-Teller transition strength. Large basis shell model.

doi: 10.1103/PhysRevC.42.1120


1988BR11     Ann.Phys.(New York) 182, 191 (1988)

B.A.Brown, W.A.Richter, R.E.Julies, B.H.Wildenthal

Semi-Empirical Effective Interactions for the 1s-0d Shell

NUCLEAR STRUCTURE A=17-39; analyzed binding energy data; deduced density dependent two-body potential parameters.

doi: 10.1016/0003-4916(88)90013-9


1988ST06     Phys.Rev. C37, 2220 (1988)

J.Stevenson, B.A.Brown, Y.Chen, J.Clayton, E.Kashy, D.Mikolas, J.Nolen, M.Samuel, B.Sherrill, J.S.Winfield, Z.Q.Xie, R.E.Julies, W.A.Richter

Search for the Exotic Nucleus 10He

NUCLEAR REACTIONS Sn(18O, X), E=30 MeV/nucleon; measured fragment mass spectra; deduced 10He production upper limit.

NUCLEAR STRUCTURE 4,5,6,7,8,9,10He; calculated binding energy. Shell model.

doi: 10.1103/PhysRevC.37.2220


1987FR09     Z.Phys. A327, 469 (1987)

S.Froneman, W.J.Naude, W.A.Richter, J.A.Stander, J.W.Koen

Nuclear Levels in 43Sc at Low Excitation Energies

NUCLEAR REACTIONS 40Ca(α, p), (α, pγ), E=12 MeV; measured Eγ, Iγ, pγ-coin. 43Sc deduced level energies, J, π, γ-branching ratios, mean T1/2, δ. ΔE-E telescope, Ge(Li) detector. Shell model calculations.


1980BR21     Phys.Rev.Lett. 45, 1681 (1980)

B.A.Brown, W.A.Richter, N.S.Godwin

Nuclear-Structure Effects on Parity Nonconservation in Light Nuclei

NUCLEAR STRUCTURE 10B, 16O, 18,19F, 20,21Ne; calculated parity nonconserving matrix elements. Nucleon-nucleon parity nonconserving potentials, microscopic shell model.

doi: 10.1103/PhysRevLett.45.1681


1980RI06     Z.Phys. A297, 343 (1980)

W.A.Richter, P.R.de Kock

Non-Normal Parity States in Mass 10-15 Nuclei

NUCLEAR STRUCTURE A=10-15; calculated unnatural parity levels, S, β-decay T1/2, Γγ, B(E2), B(M1). Shell model, modified surface delta interaction.


1977RI08     Z.Phys. A282, 207 (1977)

W.A.Richter, P.R.de Kock

The Calculation of Log ft Values and Spectroscopic Factors for Nuclei In the Mass Range 10-15

RADIOACTIVITY 15,10,11,13,14C, 12,13B, 12,13N, 13,14,15O; calculated log ft, S.


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