Global Dirac phenomenology

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:387165

Clark, B C

For several years Dirac phenomenology has been used to determine global nucleon-nucleus optical potentials which span energy ranges from 20 to 1040 MeV. We have recently completed an extensive analysis, which had as its goal the determination of energy-dependent but A-independent global potentials that reproduce proton scattering observables for {sup 12}C, {sup 16}O, {sup 40}Ca, {sup 90}Zr and {sup 208}Pb over this energy range. In addition, energy- and A-dependent global potentials for the same energy range were obtained by fitting data from 10 spin-zero targets, including those mentioned above. Such potentials are needed for the analysis of nuclear reactions such as ({gamma},p), (e, e`,p), (p, p`) and (p, 2p). They also provide a testing ground for various microscopic calculations of the nuclear optical potential. In this talk we outline the results of the analysis and present several applications. These include calculations of (p,p`) reactions and of the mean free path of the nucleon in the nuclear medium. Comparisons are made with other phenomenological potentials as well as with theoretical calculations of the nuclear optical potential.

• OSTI ID: 387165
• Report Number(s): CONF-931044--; CNN: Grant PHY-8822550; Grant Phy-9207889; Grant Phy-9202836
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DIRAC EQUATION
NUCLEAR POTENTIAL
OPTICAL MODELS
PROTON REACTIONS