Remark on: the neutron spherical optical-model absorption.

[摘要] The energy-dependent behavior of the absorption term of the spherical neutron optical potential for doubly magic {sup 208}Pb and the neighboring {sup 209}Bi is examined. These considerations suggest a phenomenological model that results in an intuitively attractive energy dependence of the imaginary potential that provides a good description of the observed neutron cross sections and that is qualitatively consistent with theoretical concepts. At the same time it provides an alternative to some of the arbitrary assumptions involved in many conventional optical-model interpretations reported in the literature and reduces the number of the parameters of the model.

[发布日期] 2007-06-30

[学科分类] 物理（综合）

[关键词] ABSORPTION;CROSS SECTIONS;ENERGY DEPENDENCE;NEUTRONS