FRICTION COEFFICIENT FOR DEEP-INELASTIC HEAVY-ION COLLISIONS

Based on the microscopic model, the friction coefficient for the relat ive motion of nuclei in deep-inelastic heavy-ion collisions is calcula ted. An advantage of the suggested method is that it allows one to con sider the relative motion of nuclei and the intrinsic motion self-cons istently. The radial dependence of the friction coefficient is studied and the results are compared with those found by other methods. It wa s demonstrated that the kinetic energy dissipation in deep-inelastic h eavy-ion collisions is a gradual process which takes up a significant part of a reaction time. A decrease of the radial friction coefficient with a heating of nuclei is shown.