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NSR database version of April 24, 2024.

Search: Author = R.H.Howell

Found 10 matches.

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2001CA51      Phys.Rev. C64, 054603 (2001)

D.B.Cassidy, A.W.Hunt, P.Asoka-Kumar, B.V.Bhat, T.E.Cowan, R.H.Howell, K.G.Lynn, A.P.Mills, Jr., J.C.Palathingal, J.A.Golovchenko

Resonant versus Nonresonant Nuclear Excitation of 115In by Positron Annihilation

NUCLEAR REACTIONS 115In(e+, X), E=310-360 keV; measured σ upper limit for resonant excitation by radiationless annihilation; deduced possible nonresonant channel. Monoenergetic beam. Comparisons with previous results and model predictions.

doi: 10.1103/PhysRevC.64.054603
Citations: PlumX Metrics

1985GR09      Phys.Rev. C31, 1679 (1985)

S.M.Grimes, J.D.Anderson, J.C.Davis, R.H.Howell, C.Wong, A.W.Carpenter, J.A.Carr, F.Petrovich

Gamow-Teller Matrix Elements from the 11B(p, n)11C Reaction at E(p) ≈ 26 MeV

NUCLEAR REACTIONS, ICPND 11B(p, n), E=16-26 MeV; measured σ(En), σ(θ); deduced residual producation σ. 11C levels deduced Gamow-Teller matrix elements. DWA analysis, Cohen-Kurath wave functions, G-matrix based interactions.

doi: 10.1103/PhysRevC.31.1679
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2665.

1982BR04      Phys.Rev.Lett. 48, 860 (1982)

F.P.Brady, C.M.Castaneda, G.A.Needham, J.L.Ullmann, J.L.Romero, T.Ford, M.L.Johnson, N.S.P.King, C.M.Morris, F.Petrovich, R.H.Howell

Isovector and Gamow-Teller Strength from Small-Angle (n, p) Reactions at 60 MeV

NUCLEAR REACTIONS 6Li, 12C, 28Si(n, p), E=60 MeV; measured σ(Ep), σ(θ); deduced effective isovector spin-flip nucleon-nucleon interaction. 6He, 12B, 28Al level deduced Gamow-Teller transition strength.

doi: 10.1103/PhysRevLett.48.860
Citations: PlumX Metrics

1982PE06      Nucl.Phys. A383, 355 (1982)

F.Petrovich, R.H.Howell, C.H.Poppe, S.M.Austin, G.M.Crawley

Nucleon Scattering from Light Nuclei (I). The Targets 6Li and 7Li

NUCLEAR REACTIONS 6,7Li(p, p), (p, p'), E=24.4 MeV; measured σ(Ep'), σ(θ); 6,7Li(p, p), (p, p'), (p, n), E=24-50 MeV; analyzed data. Distorted wave approximation, microscopic folding model.

doi: 10.1016/0375-9474(82)90083-5
Citations: PlumX Metrics

1981LA02      Phys.Lett. 99B, 23 (1981)

R.G.Lanier, G.L.Struble, L.G.Mann, W.Stoffl, I.C.Oelrich, J.Scheerer, I.D.Proctor, D.W.Heikkinen, R.H.Howell

Evidence for a Strongly Deformed Prolate Shape at N=87 from 154Eu and 152Eu(p, t) Reactions

NUCLEAR REACTIONS 152,154Eu(p, t), E=20 MeV; measured σ(Et, θ). 150Eu deduced prolate structure. 150,152Eu deduced levels, J, π, L, rotational bands, Nilsson assignments, rotational parameter. Q3D spectrograph. DWBA analysis.

doi: 10.1016/0370-2693(81)90796-6
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1980HO06      Phys.Rev. C21, 1153 (1980)

R.H.Howell, F.S.Dietrich, D.W.Heikkinen, F.Petrovich

(p, p'γ) Spin-Flip Measurement for 1+ States in 12C at E = 23.5-27 MeV

NUCLEAR REACTIONS 12C(p, p'γ), E=22-27 MeV; measured out-of-plane p'γ(θ), p'γ-coin, σ(Ep', θ). 12C levels deduced M1 spin-flip probability vs θ. Microscopic DWBA, realistic G-matrix interaction.

doi: 10.1103/PhysRevC.21.1153
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1514.

1980HO07      Phys.Rev. C21, 1158 (1980)

R.H.Howell, F.S.Dietrich, F.Petrovich

Effect of the Tensor Force on Gamma-Ray de-Excitation Angular Distributions from Dipole States Populated in the 12C(p, p') Reaction

NUCLEAR REACTIONS 12C(p, p'γ), E=22-27 MeV; measured γ(θ), Eγ, Iγ. 12C dipole transitions deduced tensor-force effects. Microscopic distorted-wave analysis, realistic G-matrix interaction.

doi: 10.1103/PhysRevC.21.1158
Citations: PlumX Metrics

1973HA58      Nucl.Phys. A213, 45 (1973)

G.R.Hammerstein, R.H.Howell, F.Petrovich

Electron and Proton Inelastic Scattering from 40Ca, 120Sn, and 208Pb

NUCLEAR REACTIONS 40Ca, 120Sn, 208Pb(e, e'), (p, p'); calculated σ(θ).

doi: 10.1016/0375-9474(73)90181-4
Citations: PlumX Metrics

1972HO05      Phys.Rev. C5, 561 (1972)

R.H.Howell, A.I.Galonsky

Proton Spin-Flip Probability in Inelastic Scattering on 120Sn and 124Sn at 30 MeV

NUCLEAR REACTIONS 120,124Sn(p, p'γ), E=30 MeV; measured spin-flip probability(θ). DWBA.

doi: 10.1103/PhysRevC.5.561
Citations: PlumX Metrics

1972HO34      Nucl.Phys. A192, 651 (1972)

R.H.Howell, G.R.Hammerstein

Effect of Complex Coupling in Inelastic Cross Sections, Asymmetries and Spin Flip in the DWA

NUCLEAR REACTIONS 58Ni, 120Sn, 208Pb(p, p'), calculated σ(θ), spin-flip probability, asymmetry(θ); analyzed complex coupling effects.

doi: 10.1016/0375-9474(72)90096-6
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