Proton elastic scattering from /sup 40,42,44,48/Ca at 800 MeV

Journal Article · Sun Feb 01 04:00:00 EST 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.828· OSTI ID:6676921

Ray, L; Hoffmann, G W; Barlett, M; McGill, J; Amann, J; Adams, G; Pauletta, G; Gazzaly, M; Blanpied, G S

New and/or corrected 800 MeV p+/sup 40,42,44,48/Ca elastic angular distributions are presented. The data, together with analyzing power measurements, are analyzed to investigate the isotopic neutron and matter density differences between these four calcium isotopes. The analysis employs a local, spin-dependent form of the second order Kerman, McManus, and Thaler optical potential in which approximately model-independent forms for the neutron densities are assumed. Nucleon-nucleon amplitude uncertainties which occur at 800 MeV are taken into account in determining the empirical isotopic density differences. The deduced neutron and matter density differences are compared to the results of other intermediate energy proton and alpha particle scattering analyses and to Hartree-Fock predictions. The various empirical results are generally in good agreement with each other and with the Hartree-Fock predictions, except for /sup 48/Ca where the results obtained here and elsewhere suggest that the /sup 48/Ca neutron excess is not distributed at quite as large a radius as predicted by Hartree-Fock theory.

• Research Organization: Department of Physics, The University of Texas, Austin, Texas 78712
• OSTI ID: 6676921
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR DISTRIBUTION
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BARYONS
CALCIUM 40 TARGET
CALCIUM 42 TARGET
CALCIUM 44 TARGET
CALCIUM 48 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HARTREE-FOCK METHOD
INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
OPTICAL MODELS
PARTICLE INTERACTIONS
PROTON REACTIONS
SCATTERING
TARGETS