SEARCHING FOR INSTABILITIES IN NUCLEAR-DYNAMICS

We present a general procedure to identify instability regions which l ead to multifragmentation events in heavy ion collisions. The method c overs all possible sources of dynamical instabilities. Information on the instability point, like the time when the nuclear system enters th e critical region, the most unstable modes and the time constant of th e exponential growing of the relative variances, are deduced without a ny numerical bias. Some hints towards a fully dynamical picture of fra gmentation processes are finally suggested.