CLASSICALLY DYNAMICAL BEHAVIOR OF A NUCLEON IN HEAVY-NUCLEI

Within the framework of the two-center shell model the classically dyn amical behaviour of a nucleon in heavy nuclei is investigated systemat ically with the change of nuclear shape parameters for the first time. It is found that as long as the nucleonic energy is appreciably highe r than the height of the potential barrier there is a good quantum-cla ssical correspondence of nucleonic regular (chaotic) motion. Thus: Boh igas, Giannoni and Schmit conjecture is confirmed once again. We find that the difference between the potential barrier for prolate nuclei a nd that for oblate ones is reponsible for the energy-dependence differ ence between the nucleonic chaotic dynamics for prolate nuclei and tha t for oblate ones. In addition, it is suggested that nuclear dissipati on is shape-dependent, and strong nuclear dissipation can be expected for medium or large separations in the presence of a considerable neck deformation built on a pronounced octupole-like deformation, which pr ovides us a dynamical understanding of nuclear shape dependence of nuc lear dissipation.