Pion single-charge-exchange scattering and nuclear structure in deformed nuclei

Journal Article · Wed Nov 15 04:00:00 EST 1989 · Annals of Physics (New York); (USA)

DOI:https://doi.org/10.1016/0003-4916(89)90046-8· OSTI ID:7102436

Bartel, J; Johnson, M B ^[1]; Singham, M K ^[2]

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1. Theoretical and Medium Energy Physics Divisions, Los Alamos National Laboratories, Los Alamos, New Mexico 87545 (US)
2. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14621 nd Medium Energy Physics Division, Los Alamos National Laboratories, Los Alamos, New Mexico 87545 (US)

Using a coupled-channel optical model, we consider pion single-charge-exchange observables for scattering from {sup 165}Ho to its isobaric analog state in {sup 165}Er. We use optical-model and Skyrme-force parameterizations that were determined independently, making this investigation free of any adjustable parameters. We find reasonably good agreement with the measured differential cross section for charge exchange on unoriented {sup 165}Ho; for the orientation asymmetry {bar {ital A}}{sub {ital s}} (transversely polarized {sup 165}Ho compared to unoriented {sup 165}Ho) we find a value that is small (2%) for scattering angle {theta}=0{degree}. We show the sensitivity of the differential cross section and the orientation asymmetry to medium modifications of the pion-nucleon scattering amplitude; we also compare the neutron, proton, and transition densities obtained in constrained Hartree--Fock calculations to various {ital ansatze} used previously in the literature. In particular, we study the importance of pairing correlations, coupled channels, various Coulomb effects, the relative contributions of higher multipolarities in the density, and model dependence arising from the choice of the Skyrme interaction. {copyright} 1989 Academic Press, Inc.

• OSTI ID: 7102436
• Journal Information: Annals of Physics (New York); (USA), Journal Name: Annals of Physics (New York); (USA) Vol. 196:1; ISSN APNYA; ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

653001 -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BETA DECAY RADIOISOTOPES
CHARGE EXCHANGE
CHARGED-PARTICLE REACTIONS
CORRELATIONS
COULOMB FIELD
COUPLED CHANNEL THEORY
CROSS SECTIONS
DEFORMED NUCLEI
DIFFERENTIAL CROSS SECTIONS
DIFFERENTIAL EQUATIONS
DISTRIBUTION
DYSPROSIUM 164
DYSPROSIUM ISOTOPES
ELECTRIC FIELDS
ELECTRON CAPTURE RADIOISOTOPES
EQUATIONS
ERBIUM 165
ERBIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FUNCTIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HARTREE-FOCK METHOD
HOLMIUM 165 TARGET
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
KLEIN-GORDON EQUATION
MEAN-FIELD THEORY
MESON REACTIONS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
OPTICAL MODELS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
PION REACTIONS
POTENTIALS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SKYRME POTENTIAL
STABLE ISOTOPES
TARGETS
WAVE EQUATIONS
WAVE FUNCTIONS