NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 11, 2024.

Search: Author = W.R.Zimmerman

Found 18 matches.

Back to query form

2021LA03      Phys.Rev. C 103, 034311 (2021)

G.Laskaris, W.Ji, X.Yan, J.Zhou, W.R.Zimmerman, M.W.Ahmed, T.Averett, A.Deltuva, A.C.Fonseca, H.Gao, J.Golak, A.Kafkarkou, H.J.Karwowski, B.Lalremruata, J.Manfredi, J.M.Mueller, P.U.Sauer, R.Skibinski, A.P.Smith, M.B.Tsang, H.R.Weller, H.Witala, Y.K.Wu, Z.W.Zhao

First measurement of the asymmetry and the Gerasimov-Drell-Hearn integrand from the ³He((pol)(γ(pol), p)²H reaction at an incident photon energy of 29 MeV

NUCLEAR REACTIONS ³He(polarized γ, p)²H, E=29 MeV; measured Ep, Ip, p(θ), time-of-flight, spin-dependent asymmetry and total σ using a circularly polarized, monoenergetic γ-ray beam and a longitudinally polarized ³He target, and an array of depleted silicon surface barrier detectors at the High Intensity γ-ray Source (HIγS) facility at TUNL; deduced contribution from the two-body photo-disintegration to the ³He Gerasimov-Drell-Hearn (GDH) integrands, and compared with the state-of-the art three-nucleon system calculations.

doi: 10.1103/PhysRevC.103.034311
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0271.

2015LA22      Phys.Lett. B 750, 547 (2015)

G.Laskaris, X.Yan, J.M.Mueller, W.R.Zimmerman, W.Xiong, M.W.Ahmed, T.Averett, P.-H.Chu, A.Deltuva, C.Flower, A.C.Fonseca, H.Gao, J.Golak, J.N.Heideman, H.J.Karwowski, M.Meziane, P.U.Sauer, R.Skibinski, I.I.Strakovsky, H.R.Weller, H.Witala, Y.K.Wu

Measurement of the doubly-polarized ³He(pol)(γ(pol), n)pp reaction at 16.5 MeV and its implications for the GDH sum rule

NUCLEAR REACTIONS ³He(polarized γ, n), E=12.8, 14.7 MeV; measured reaction products, Eγ, Iγ, En, In; deduced σ(θ, E), σ, contribution from the three-body channel to the Gerasimov-Drell-Hearn (GDH) integrand. Comparison with available data, Monte Carlo simulations using GEANT4.

doi: 10.1016/j.physletb.2015.09.065
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0212.

2015MU09      Phys.Rev. C 92, 034604 (2015)

J.M.Mueller, M.W.Ahmed, B.J.Davis, H.J.Karwowski, D.M.Markoff, L.S.Myers, M.C.Spraker, S.Stave, J.R.Tompkins, H.R.Weller, W.R.Zimmerman

Polarization asymmetries in the ⁹Be (γ, n₀)reaction

NUCLEAR REACTIONS ⁹Be(polarized γ, n), E=5.5-15.5 MeV from High Intensity γ-ray Source (HIγS) at Duke University and TUNL; measure neutron spectra, time-of-flight spectrum, neutron yields parallel and perpendicular to the plane of beam polarization, polarization asymmetries using nearly 100% linearly polarized and monoenergetic γ-ray beam. Comparison with direct capture calculations using only E1 contributions. Relevance to new method of assaying special nuclear materials (SNM).

doi: 10.1103/PhysRevC.92.034604
Citations: PlumX Metrics

2014KA04      Phys.Rev. C 89, 014601 (2014); Pub.Note Phys.Rev. C 89, 019902 (2014)

A.Kafkarkou, M.W.Ahmed, D.P.Kendellen, I.Mazumdar, J.M.Mueller, L.S.Myers, M.H.Sikora, H.R.Weller, W.R.Zimmerman

Cross section measurements of the ¹⁰B(p, γ)¹¹C reaction between 2.0 and 6.0 MeV

NUCLEAR REACTIONS ¹⁰B(p, γ)¹¹C, E=2.0-6.0 MeV; measured Eγ, Iγ, 511-keV annihilation radiation from ¹¹C decay, ¹¹C decay curve, total production σ(E) for ¹¹C by activation method at TUNL tandem accelerator facility; deduced astrophysical S factors. Comparison with previous measurements. Relevance to boron-fueled colliding beam nuclear reactors.

doi: 10.1103/PhysRevC.89.014601
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2209.

2014MU01      Phys.Rev. C 89, 034615 (2014)

J.M.Mueller, M.W.Ahmed, R.H.France, M.S.Johnson, H.J.Karwowski, L.S.Myers, J.Randrup, M.H.Sikora, M.C.Spraker, S.Stave, J.R.Tompkins, R.Vogt, H.R.Weller, C.S.Whisnant, W.R.Zimmerman

Prompt neutron polarization asymmetries in photofission of ²³²Th, ^{233, 235, 238}U, ²³⁷Np, and ^{239, 240}Pu

NUCLEAR REACTIONS ²³²Th, ^233,235,238U, ²³⁷Np, ^239,240Pu(polarized γ, F), E=5.3-7.6 MeV; measured E(n), I(n), time-of flight spectrum, angular distribution, and polarization asymmetry of prompt neutrons generated by fission, θ(fragment) at HIγS-TUNL facility; deduced angular distribution coefficients b and c, and compared with predicted values from FREYA computer code of event-by-event Monte Carlo prompt neutron+γ-ray emission calculation. Discussed differences in polarization asymmetries between the even-even actinides and odd-A actinides.

doi: 10.1103/PhysRevC.89.034615
Citations: PlumX Metrics

2014MY04      Phys.Rev. C 90, 027603 (2014)

L.S.Myers, M.W.Ahmed, G.Feldman, A.Kafkarkou, D.P.Kendellen, I.Mazumdar, J.M.Mueller, M.H.Sikora, H.R.Weller, W.R.Zimmerman

Compton scattering from ⁶Li at 86 MeV

NUCLEAR REACTIONS ⁶Li, ¹⁶O(polarized γ, γ), E=86 MeV; measured Eγ, Iγ, σ(θ) at HIγS facility at TUNL; deduced E1, E2, QD resonance parameters. GEANT4 simulations. Discussed nuclear polarizability. Comparison with earlier experimental results for ¹⁶O target.

doi: 10.1103/PhysRevC.90.027603
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0195.

2013KA48      Nucl.Instrum.Methods Phys.Res. B316, 48 (2013)

A.Kafkarkou, M.W.Ahmed, P.H.Chu, R.H.France, H.J.Karwowski, D.P.Kendellen, G.Laskaris, I.Mazumdar, J.M.Mueller, L.S.Myers, R.M.Prior, M.H.Sikora, M.C.Spraker, H.R.Weller, W.R.Zimmerman

Study of the ¹⁰B(p, α) reaction between 2.1 and 6.0 MeV

NUCLEAR REACTIONS ¹⁰B(p, α), E=2.1-6 MeV; measured reaction products, Eα, Iα; deduced σ(θ), S-factors and their uncertainties. Comparison with available data.

doi: 10.1016/j.nimb.2013.08.029
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2072.

2013WE01      Acta Phys.Pol. B44, 587 (2013)

H.R.Weller, M.W.Ahmed, J.M.Mueller, L.S.Myers, W.R.Zimmerman, G.Feldman, M.H.Sikora

Precise Determination of the Isovector Giant Quadrupole Resonance in Nuclei

NUCLEAR REACTIONS ⁸⁹Y, ²⁰⁹Bi(γ, γ'), E<36 MeV; measured reaction products, Eγ, Iγ; deduced polarization ratios, IVGQR parameters, Isovector E2 energy weighted sum rule, width, resonance parameters. ¹²⁴Sn, ¹⁴²Nd(γ, γ'), E not given; calculated yields.

doi: 10.5506/APhysPolB.44.587
Citations: PlumX Metrics

2013ZI03      Phys.Rev.Lett. 110, 152502 (2013)

W.R.Zimmerman, M.W.Ahmed, B.Bromberger, S.C.Stave, A.Breskin, V.Dangendorf, Th.Delbar, M.Gai, S.S.Henshaw, J.M.Mueller, C.Sun, K.Tittelmeier, H.R.Weller, Y.K.Wu

Unambiguous Identification of the Second 2⁺ State in ¹²C and the Structure of the Hoyle State

NUCLEAR REACTIONS ¹²C(γ, α)⁸Be, E=9.1-10.7 MeV; measured reaction products, Eα, Iα. ¹²C; deduced second 2⁺ Hoyle state, widths, B(E2). Comparison with available data.

doi: 10.1103/PhysRevLett.110.152502
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0180. Data from this article have been entered in the XUNDL database. For more information, click here.

2011ZI01      Phys.Rev. C 84, 027304 (2011)

W.R.Zimmerman, N.E.Destefano, M.Freer, M.Gai, F.D.Smit

Further evidence for the broad 2⁺₂ state at 9.6 MeV in ¹²C

NUCLEAR REACTIONS ¹²C(p, p'), E=25 MeV; measured Ep, Ip, σ(θ). ¹²C; deduced levels, resonances, J, π. Comparison with previous experiments.

doi: 10.1103/PhysRevC.84.027304
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1856. Data from this article have been entered in the XUNDL database. For more information, click here.

1978ZI01      Nucl.Phys. A297, 263 (1978)

W.R.Zimmerman, J.J.Kraushaar, M.J.Schneider, H.Rudolph

A Study of the (³He, t) Reaction on ⁶⁰Ni

NUCLEAR REACTIONS ⁶⁰Ni(³He, t), (³He, α), E=38 MeV; measured σ(θ). ⁶⁰Cu, ⁵⁹Ni deduced levels, J, π, S. Enriched targets, coupled-reaction-channels calculations.

doi: 10.1016/0375-9474(78)90276-2
Citations: PlumX Metrics

1978ZI03      Nucl.Phys. A309, 34 (1978)

W.R.Zimmerman, J.J.Kraushaar, F.E.Cecil

Two-Step Processes in the ⁵⁴Fe(³He, t)⁵⁴Co Reaction

NUCLEAR REACTIONS ⁵⁴Fe(³He, t), E=37.7 MeV; measured σ(θ). Compared with coupled channel calculations. ⁵⁴Co deduced levels, J, π. Enriched target.

doi: 10.1016/0375-9474(78)90533-X
Citations: PlumX Metrics

1977BL08      Nucl.Phys. A287, 156 (1977)

H.P.Blok, W.R.Zimmerman, J.J.Kraushaar, P.A.Batay-Csorba

Excitation of Core Coupled States in ⁸⁷Sr and ⁸⁹Sr via Two-Step Processes in the ⁸⁸Sr(p, d) and ⁸⁸Sr(d, p) Reactions

NUCLEAR REACTIONS ⁸⁸Sr(p, d), E=27.1 MeV; measured σ(Ed, θ) absolute; ⁸⁸Sr(d, p), E=17.5 MeV; measured σ(Ep, θ) absolute. ^87,89Sr deduced levels, L, J, π, S. DWBA, coupled reaction channel analysis. Enriched ⁸⁸Sr target.

doi: 10.1016/0375-9474(77)90569-3
Citations: PlumX Metrics

1977SH02      Nucl.Phys. A275, 189 (1977)

J.R.Shepard, W.R.Zimmerman, J.J.Kraushaar

Energy Dependence of the Zero-Range DWBA Normalization of the ⁵⁸Ni(³He, α)⁵⁷Ni Reaction

NUCLEAR REACTIONS ⁵⁸Ni(³He, α), E=15-205 MeV; calculated σ(Eα, θ). ⁵⁷Ni levels deduced S.

doi: 10.1016/0375-9474(77)90283-4
Citations: PlumX Metrics

1977ZI02      Phys.Rev. C16, 2432 (1977)

W.R.Zimmerman, J.J.Kraushaar, M.J.Schneider, H.Rudolph

⁵⁶Fe(³He, t)⁵⁶Co Reaction

NUCLEAR REACTIONS ⁵⁶Fe(³He, t), E=38.2 MeV; measured σ(Et, θ). ⁵⁶Co deduced levels, J, π, L. DWBA analysis.

doi: 10.1103/PhysRevC.16.2432
Citations: PlumX Metrics

1975RI05      Phys.Lett. 60B, 19 (1975)

L.D.Rickertsen, M.J.Schneider, J.J.Kraushaar, W.R.Zimmerman, H.Rudolph

Two-Step Processes in the (³He, t) Reaction to Analog and Anti-Analog States in ⁵⁶Co

NUCLEAR REACTIONS ⁵⁶Fe(³He, t), E=38.2 MeV; measured σ(Et, θ). ⁵⁶Fe(³He, α), E=38.2 MeV; measured σ(Eα, θ). ⁵⁵Fe levels deduced S.

doi: 10.1016/0370-2693(75)90516-X
Citations: PlumX Metrics

1975SC27      Phys.Rev. C12, 335 (1975)

M.J.Schneider, B.W.Ridley, M.E.Rickey, J.J.Kraushaar, W.R.Zimmerman

Study of Unbound Levels in ¹⁰C via ¹⁰B(³He, t)

NUCLEAR REACTIONS ¹⁰B(³He, t), E=38.2 MeV; measured σ(Et, θ). ¹⁰C deduced levels, Γ.

doi: 10.1103/PhysRevC.12.335
Citations: PlumX Metrics

1974AN27      Nucl.Phys. A236, 77 (1974)

R.E.Anderson, J.J.Kraushaar, M.E.Rickey, W.R.Zimmerman

Tion A Study of the Higher Excited States of ¹⁰Be from the ⁹Be(d, p)¹⁰Be Reac

NUCLEAR REACTIONS ⁹Be(d, p), E=17.3 MeV; measured σ(Ep, θ). ¹⁰Be deduced levels, L(n), S, level-width.

doi: 10.1016/0375-9474(74)90222-X
Citations: PlumX Metrics