Inertia effects in the mass transport of heavy ion reactions

Abstract

Mass transport is described as a damped motion including inertia and a Gaussian stochastic force. The inertia coefficient is estimated in a hydrodynamical model, the damping coefficient by volume dissipation as well as by wall dissipation. Depending on the strength of the restoring force the mass-transfer degree of freedom may show inertia effects. In particular, underdamped motion cannot be excluded. The time development of the mean value (A)t and the variance Ft is given in the overdamped as well as in the underdamped regime. The main effect of the inertia is a slower initial increase of F t. A small-amplitude oscillatory behavior of F~ is possible in a moderately underdamped situation.