Dissipative resistance against changes in the mass asymmetry degree of freedom in nuclear dynamics: The completed wall-and-window formula

The wall-and-window formula, describing the macroscopic energy dissipation for two nuclei in relative motion, is generalized to include the dissipation associated with a time rate of change of the mass asymmetry degree of freedom. The additonal term is crucial for the possibility of understanding the existence of deep-inelastic nuclear reactions. (orig.)