Nonrelativistic full-folding model of nucleon elastic scattering at intermediate energies

Journal Article · Tue May 01 04:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2188· OSTI ID:6938924

Arellano, H F ^[1]; Brieva, F A ^[2]; Love, W G ^[1]

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1. Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602 (USA)
2. Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602 (USA) Departamento de Fisica, Facultad de Ciencias Fisicas y Matematicas, Universidad de Chile, Casilla 487-3, Santiago, (Chile)

Nonrelativistic full-folding optical model potentials for nucleon elastic scattering have been calculated and applied to proton scattering on {sup 16}O and {sup 40}Ca at energies between 135 and 500 MeV. The optical potentials were calculated in momentum space by folding the mixed target density with the off-energy-shell free {ital t} matrix derived from the Paris nucleon-nucleon potential. The energy dependence and knockon exchange terms of the {ital t} matrix were included explicitly. Significant differences were observed between observables calculated from the full-folding model and conventional {ital t}{rho} approximations to it. At proton energies near and below {similar to}400 MeV, the full-folding model provides a substantial improvement in the description of the data compared to {ital t}{rho} approximations. These results demonstrate the importance of accurate treatments of the off-energy-shell properties of effective interactions as well as the mixed density in calculating nonrelativistic optical potentials for intermediate energy nucleon scattering. Exploratory calculations at 500 MeV together with those at lower energies suggest the need for an improved description of the nucleon-nucleon interaction at higher energies.

• OSTI ID: 6938924
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:5; ISSN 0556-2813; 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
BARYON-BARYON INTERACTIONS
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
ELASTIC SCATTERING
ENERGY RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATHEMATICAL MODELS
MATRICES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
OPTICAL MODELS
OXYGEN 16 TARGET
PARTICLE INTERACTIONS
POTENTIALS
PROTON REACTIONS
S MATRIX
SCATTERING
SHELL MODELS
TARGETS