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NSR database version of April 26, 2024.

Search: Author = J.Owens-Fryar

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2023MU01      Phys.Rev. C 107, L011602 (2023)

D.Mucher, A.Spyrou, M.Wiedeking, M.Guttormsen, A.C.Larsen, F.Zeiser, C.Harris, A.L.Richard, M.K.Smith, A.Gorgen, S.N.Liddick, S.Siem, H.C.Berg, J.A.Clark, P.A.DeYoung, A.C.Dombos, B.Greaves, L.Hicks, R.Kelmar, S.Lyons, J.Owens-Fryar, A.Palmisano, D.Santiago-Gonzalez, G.Savard, W.W.von Seeger

Extracting model-independent nuclear level densities away from stability

RADIOACTIVITY ⁷⁶Ga(β^-); analyzed experimental total absorption spectrum (TAS) data in 2016Do05: Phys. Rev. C 93, 064317. ⁷⁶Ge; deduced γ-strength function (γSF), nuclear level density (NLD). Comparison to other experimental data and to γ-strength function in ⁷⁴Ge. ⁸⁸Br(β^-); measured Eγ, Iγ, TAS spectrum using Summing NaI (SuN) detector at Argonne CARIBU facility. ⁸⁸Kr; deduced γ-strength function (γSF), nuclear level density (NLD). Compared with other experimental data γ-strength functions for ⁸⁶Kr and ⁸⁷Kr. NLD results are compared to calculations done with 3 semi-microscopic models - HFB+Skyrme, HFB+Skyrme combinatorial, temperature-dependent HFB+Gogny. Combination of "shape" method with β-Oslo technique which allows extraction of NLD in model independent way.

NUCLEAR REACTIONS ⁸⁷Kr(n, γ), E<1 MeV; calculated σ(E) using newly obtained NLD. Values are given relative to calculated ones using current RIPL-3 recommended level densities.

doi: 10.1103/PhysRevC.107.L011602
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2020VO08      Phys.Rev. C 102, 014325 (2020)

D.Votaw, P.A.DeYoung, T.Baumann, A.Blake, J.Boone, J.Brown, D.Chrisman, J.E.Finck, N.Frank, J.Gombas, P.Gueye, J.Hinnefeld, H.Karrick, A.N.Kuchera, H.Liu, B.Luther, F.Ndayisabye, M.Neal, J.Owens-Fryar, J.Pereira, C.Persch, T.Phan, T.Redpath, W.F.Rogers, S.Stephenson, K.Stiefel, C.Sword, A.Wantz, M.Thoennessen

Low-lying level structure of the neutron-unbound N=7 isotones

NUCLEAR REACTIONS ⁹Be(¹¹Be, ⁸He), (¹¹Be, ⁹Li), E=44 MeV/nucleon; ⁹Be(¹²B, ⁸He), (¹²B, ⁹Li), E=45 MeV/nucleon, [secondary ¹¹Be and ¹²B beams from ⁹Be(¹⁶O, X), E=120 MeV/nucleon, followed by separation of ions of interest using A1900 Fragment Separator at the Coupled Cyclotron Facility of NSCL-MSU]; measured E(n), I(n), charged-particles, (particle)n-coin using the MoNA-LISA detector array for neutron detection and cathode readout drift chambers (CRDCs) for charged particles; deduced decay energy spectra of ⁹He and ¹⁰Li and neutron-unbound states. ⁹He, ¹⁰Li; deduced levels, resonances, widths, J, π, l-values of neutrons from the resonances in ⁹He and ¹⁰Li. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.102.014325
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