On the Momentum Dependence of the Nucleon - Nucleus Optical Potential
Preprint
- 23 February 1994
Abstract
The momentum dependence of the mean-field contribution to the real part of the optical model potential is investigated employing realistic nucleon-nucleon interactions. Within a non-relativistic approach a momentum dependence originates from the non-locality of the Fock exchange term. Deducing the real part of the optical model from a relativistic Dirac Brueckner Hartree Fock approximation for the self-energy of the nucleons yields an additional momentum dependence originating from the non-relativistic reduction of the self-energy. It is demonstrated that large Fock terms are required in the non-relativistic approach to simulate these relativistic features. A comparison is made between a local density approximation for the optical model and a direct evaluation in finite nuclei.Keywords
All Related Versions
- Version 1, 1994-02-23, ArXiv
- Published version: Nuclear Physics A, 579 (1), 85.
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