Radial Dependence of Imaginary Part of Nuclear Optical Potential

Abstract

The imaginary part of tht nuclear optical potential for neutrons is calculated by means of a method of the volume direct processes, on the basis of the statistical independent particle model with a eiffuse nuclear surface. It is shown that the localization of the absorption near the surface, which was found by Bjorklund and Fernbach, can be reproduced using reaso­ nable values for the relevant parame~ers. The effect of the Pauli exclusion principle, of the energy dependence of the two-body collision cross section, of the mass number dependence of the parameters, and of the correlation between nucleons arc also discussed.