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NSR database version of April 11, 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
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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
Citations: PlumX Metrics