Abstract

Angular-momentum dependent interaction times for damped heavy-ion reactions are deduced from experimental angular distributions. The angular momentum l is related to the experimental kinetic-energy loss assuming the energy loss to increase monotonically with decreasing l and the experimental cross section to be given by the sharp cutoff model. Although the analysis depends on the moment of inertia of the intermediate double-nucleus system, rather short interaction times are obtained ranging from 10/sup -22/ to several times 10/sup -21/ sec. Assuming this time scale, nucleon diffusion coefficients are deduced from experimental fragment charge distributions.

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