An in-medium full-folding model approach to quasielastic (p,n) charge-exchange reactions
| Autor: | W. G. Love, Hugo F. Arellano |
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| Rok vydání: | 2007 |
| Předmět: | |
| DOI: | 10.48550/arxiv.0706.2523 |
| Popis: | A microscopic description of the quasielastic (p,n) charge-exchange reaction (here, charge-exchange scattering between analogue states) is presented and discussed. Emphasis is focused on the spin-isospin structure of the projectile-target coupling. The model is a coupled-channel extension of the full-folding optical model approach (OMP) developed for nucleon elastic scattering, where emphasis is placed on retaining the genuine off-shell behavior of realistic effective interactions in the nuclear medium. The resulting non-local optical potentials are applied to the calculation of (p,n) differential cross sections, with particular emphasis on small-angle Fermi ($\Delta S=0$) cross-sections to isobaric analog states. These parameter-free results provide a reasonable description of the $^{14}$C(p,n)-data at proton energies above $\sim$100 MeV, but deteriorate for heavier targets. These shortcomings are analyzed and possible ways to correct them are discussed. Comment: 20 pages plus 10 figures. Accepted for publication in Phys. Rev. C |
| Databáze: | OpenAIRE |
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