Energy dependence of the mean-field potential for neutron scattering from /sup 190,192/Os and /sup 194,196/Pt

Journal Article · Fri Apr 01 04:00:00 EST 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.37.1787· OSTI ID:5290990

Hicks, S E; McEllistrem, M T

An extensive set of neutron scattering cross sections for four shape-transitional nuclei, /sup 190,192/Os and /sup 194,196/Pt, have been examined to test recent mean-field concepts which relate scattering potentials to those which bind single particle levels in nuclei. Scattering observables for each of these four nuclei have been separately and exhaustively analyzed to fix the potential strengths and their dependence on incident neutron energy. The results of these analyses revealed potentials quite different than the usual ''Hartree-Fock type'' potentials arising from global analyses at higher particle energies. A dispersion relation, based on the imaginary parts of the optical model potential, is applied in these analyses. Not only can the nonlinear energy dependencies observed in the scattering potential be described with this method, the potential can be extrapolated to negative energies where it is constrained to fit bound states in the neutron-plus-nucleus system. This is the first report of dispersion corrections for potentials from coupled-channels analyses of scattering from highly collective nuclei.

• Research Organization: Department of Physics and Astronomy, The University of Kentucky, Lexington, Kentucky 40506
• OSTI ID: 5290990
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 37:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DISPERSION RELATIONS
ENERGY RANGE
HADRON REACTIONS
MATHEMATICAL MODELS
MEAN-FIELD THEORY
MEV RANGE
MEV RANGE 01-10
NEUTRON REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
OPTICAL MODELS
OSMIUM 190 TARGET
OSMIUM 192 TARGET
PLATINUM 194 TARGET
PLATINUM 196 TARGET
TARGETS