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NSR database version of April 11, 2024.

Search: Author = J.Johnstone

Found 5 matches.

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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.


1985GE03      Phys.Rev. C32, 983 (1985)

J.-F.Germond, M.B.Johnson, J.A.Johnstone

Diffraction Theory Analysis of Pion Elastic Scattering from the Calcium Isotopes

NUCLEAR REACTIONS 40,42,44,48Ca(π+, π+), (π-, π-), E=180 MeV; analyzed σ(θ); deduced pion-isobar resonance dynamics. Coulomb corrected impact parameters. 42,44,48Ca deduced proton density relative to 40Ca. Diffraction theory.

doi: 10.1103/PhysRevC.32.983
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1980BA45      Phys.Lett. B97, 45 (1980)

B.M.Barnett, W.Gyles, R.R.Johnson, K.L.Erdman, J.Johnstone, J.J.Kraushaar, S.Lepp, T.G.Masterson, E.Rost, D.R.Gill, A.W.Thomas, J.Alster, I.Navon, R.H.Landau

Proton Radii Determinations from the Ratio of π+ Elastic Scattering from 11B and 12C

NUCLEAR REACTIONS 12C, 11B(π+, π+), E=38.6, 47.7 MeV; measured σ(θ). 12C, 11B deduced rms charge radii differences.

doi: 10.1016/0370-2693(80)90543-2
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Note: The following list of authors and aliases matches the search parameter J.Johnstone: , J.A.JOHNSTONE, J.E.JOHNSTONE