Deuteron effects in nucleon-nucleus scattering at intermediate energies

Journal Article · Mon Oct 31 23:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.2480· OSTI ID:6837157

Arellano, H F ^[1]; Brieva, F A ^[2]; Love, W G ^[3]

---

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

We investigate the role of the full dynamical dependence of the free off-shell nucleon-nucleon [ital t] matrix on the optical potential for proton-nucleus elastic scattering in the 100--400 MeV incident energy range within a full-folding model context. Particular emphasis is placed on the effects of deuteron formation by explicitly taking into account pole singularities in the free nucleon-nucleon [ital t] matrix. The full-folding model for the optical potential provides a flexible framework for this purpose as it allows the sampling of the internucleon effective force both off shell and as a function of the energy available in the center of mass for the interacting nucleon pair. A comparison of calculated and measured scattering observables for proton elastic scattering on [sup 40]Ca and [sup 208]Pb leads to the conclusion that the full off-shell free [ital t] matrix is a poor approximation for that part of the nucleon-nucleon effective force required for calculating optical potentials below [similar to]250 MeV. Medium effects and higher order corrections to the optical potential are necessary to improve our understanding of nucleon scattering.

• OSTI ID: 6837157
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:5; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
663580 -- Nuclear Mass Ranges-- A=190-219-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BEAMS
CALCIUM 40 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DEUTERONS
ELASTIC SCATTERING
ENERGY RANGE
HADRON REACTIONS
LEAD 208 TARGET
MEV RANGE
MEV RANGE 100-1000
NUCLEAR FORCES
NUCLEAR REACTIONS
NUCLEON REACTIONS
OPTICAL MODELS
POLARIZED BEAMS
POTENTIALS
PROTON REACTIONS
SCATTERING
TARGETS