Microscopic absorptive interaction for composite finite nuclei

Abstract

The theoretical framework for the microscopic calculation of an effective interaction of two composite nuclei is developed by applying Feshbach's projection operator formalism. Both translational invariance and the Pauli principle are taken into account exactly. The theory is based on model wavefunctions for finite nuclei and does not require nuclear matter approximations. The model Q-space consists of channels in which one or both nuclei are excited. A 1 p1 h-excitation mechanism is considered in some detail and the properties of an effective absorptive interaction are studied for the α-α-system as an example.