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Title: Surface-peaked medium effects in the interaction of nucleons with finite nuclei

Abstract

We investigate the asymptotic separation of the optical model potential for nucleon-nucleus scattering in momentum space, where the potential is split into a medium-independent term and another depending exclusively on the gradient of the density-dependent g matrix. This decomposition confines the medium sensitivity of the nucleon-nucleus coupling to the surface of the nucleus. We examine this feature in the context of proton-nucleus scattering at beam energies between 30 and 100 MeV and find that the pn coupling accounts for most of this sensitivity. Additionally, based on this general structure of the optical potential we are able to treat both, the medium dependence of the effective interaction and the full mixed density as described by single-particle shell models. The calculated scattering observables agree within 10% with those obtained by Arellano, Brieva, and Love in their momentum-space g-folding approach.

Authors:
;  [1]
  1. Department of Physics - FCFM, University of Chile, Av. Blanco Encalada 2008, Santiago (Chile)
Publication Date:
OSTI Identifier:
21192045
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 78; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.78.014608; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASYMPTOTIC SOLUTIONS; BEAMS; COUPLING; DECOMPOSITION; DENSITY; G MATRIX; ION-ATOM COLLISIONS; MEV RANGE 10-100; NUCLEI; NUCLEONS; OPTICAL MODELS; PARTICLES; PROTON-NUCLEON INTERACTIONS; SCATTERING; SENSITIVITY; SHELL MODELS; SURFACES

Citation Formats

Aguayo, F J, and Arellano, H F. Surface-peaked medium effects in the interaction of nucleons with finite nuclei. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.78.014608.
Aguayo, F J, & Arellano, H F. Surface-peaked medium effects in the interaction of nucleons with finite nuclei. United States. https://doi.org/10.1103/PHYSREVC.78.014608
Aguayo, F J, and Arellano, H F. 2008. "Surface-peaked medium effects in the interaction of nucleons with finite nuclei". United States. https://doi.org/10.1103/PHYSREVC.78.014608.
@article{osti_21192045,
title = {Surface-peaked medium effects in the interaction of nucleons with finite nuclei},
author = {Aguayo, F J and Arellano, H F},
abstractNote = {We investigate the asymptotic separation of the optical model potential for nucleon-nucleus scattering in momentum space, where the potential is split into a medium-independent term and another depending exclusively on the gradient of the density-dependent g matrix. This decomposition confines the medium sensitivity of the nucleon-nucleus coupling to the surface of the nucleus. We examine this feature in the context of proton-nucleus scattering at beam energies between 30 and 100 MeV and find that the pn coupling accounts for most of this sensitivity. Additionally, based on this general structure of the optical potential we are able to treat both, the medium dependence of the effective interaction and the full mixed density as described by single-particle shell models. The calculated scattering observables agree within 10% with those obtained by Arellano, Brieva, and Love in their momentum-space g-folding approach.},
doi = {10.1103/PHYSREVC.78.014608},
url = {https://www.osti.gov/biblio/21192045}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 1,
volume = 78,
place = {United States},
year = {Tue Jul 15 00:00:00 EDT 2008},
month = {Tue Jul 15 00:00:00 EDT 2008}
}