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NSR database version of April 27, 2024.

Search: Author = J.E.Johnstone

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2023HU12      Phys.Rev. C 107, 064612 (2023)

S.Hudan, J.E.Johnstone, R.Kumar, R.T.deSouza, J.Allen, D.W.Bardayan, D.Blankstein, C.Boomershine, S.Carmichael, A.Clark, S.Coil, S.L.Henderson, P.D.O'Malley, W.W.von Seeger

Quantifying resonance behavior in the fusion of ¹⁷O with ¹²C at above-barrier energies

NUCLEAR REACTIONS ¹²C(¹⁷O, X)²⁹Si, E=47, 47.5, 48, 55 MeV; measured reaction products, evaporation residues, charged particles; deduced fusion excitation functions, fusion σ(E). Comparison to other experimental data including fusion data on ¹⁷F+¹²C system. Systematics of the fusion σ for ^16,17,18,19+¹²C systems. Gas filled (CH₄) active target MuSIC@Indiana at the University of Notre Dame Nuclear Science Laboratory.

doi: 10.1103/PhysRevC.107.064612
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2022JO04      Phys.Rev. C 106, L011603 (2022)

J.E.Johnstone, V.Singh, R.Giri, S.Hudan, J.Vadas, R.T.deSouza, D.Ackermann, A.Chbihi, Q.Hourdille, A.Abbott, C.Balhoff, A.Hannaman, A.B.McIntosh, M.Sorensen, Z.Tobin, A.Wakhle, S.J.Yennello, M.A.Famiano, K.W.Brown, C.Santamaria, J.Lubian, H.O.Soler, B.V.Carlson

Proton and neutron exchange as a prelude to fusion at near-barrier energies

NUCLEAR REACTIONS ^39,41,45,47K(²⁸Si, X), ^36,44Ar(²⁸Si, X), E(cm)=34-46 MeV; measured reaction products, evaporation residues; deduced fusion excitation functions, fusion σ(E), potential energy surfaces for binary fragments. Comparison to Dirac-Hartree-Bogoliubov (DHB) calculations for the ground state densities used in Sao Paulo fusion model. Radioactive beams of K and Ar ions were produced by the coupled cyclotron facility at MSU-NSCL and thermalized in a linear gas stopper before being reaccelerated by the ReA3 linac.

doi: 10.1103/PhysRevC.106.L011603
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2021SI29      Phys.Rev. C 104, L041601 (2021)

V.Singh, J.E.Johnstone, R.Giri, S.Hudan, J.Vadas, R.T.deSouza, D.Ackermann, A.Chbihi, Q.Hourdille, A.Abbott, C.Balhoff, A.Hannaman, A.B.McIntosh, M.Sorensen, Z.Tobin, A.Wakhle, S.J.Yennello, M.A.Famiano, K.W.Brown, C.Santamaria, J.Lubian, H.O.Soler, B.V.Carlson

Impact of shell structure on the fusion of neutron-rich mid-mass nuclei

NUCLEAR REACTIONS ¹⁶O(³⁹K, X), (⁴¹K, X), (⁴⁵K, X), (⁴⁷K, X), (³⁶Ar, X), (⁴⁴Ar, X), E(cm)=23-33 MeV, [secondary radioactive ^45,47K, ⁴⁴Ar beams from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon, followed by separation of ions using A1900 at NSCL-MSU facility]; measured reaction products, fusion σ(E); deduced reduced fusion excitation functions; investigated influence of shell effects on fusion of mid-mass nuclei. Comparison of experimental fusion cross sections with Sao Paulo model using Dirac-Hartree-Bogoliubov (DHB) densities, and densities from systematics; deduced over prediction of fusion experimental σ for closed-shell nuclei using DHB densities. ^39,41,45,47K, ^36,44Ar; predicted DHB density distributions of protons and neutrons. Relevance to importance of understanding shell effects at the saddle point for accurate description of fusion process.

doi: 10.1103/PhysRevC.104.L041601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2698.