Abstract
A time-dependent shell-model approach to large-amplitude collective nuclear motion is introduced which simultaneously treats the coherent (diabatic) single-particle motion in the time-dependent mean field and the in coherent two-body collisions which lead to statistical equilibrium within the intrinsic degrees of freedom. An important feature of the combined effects from diabatic single-particle motion and dissipative two-body collisions is the retardation of dissipation for realistic values of the mean free path of nucleons. This elastoplastic behaviour represents an interesting dynamical property of nuclear matter. A diabatic two-center shell-model is introduced and results on diabatic single-particle level s and potentials are given and compared with corresponding quantities from TDHF calculations. Effects on cross-sections of heavy-ion collisions are discussed and preliminary results on the diabatic pre-equilibrium emission of nucleons in central collisions are presented.
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