CLUSTER FORMATION IN DISORDERED-SYSTEMS AND NUCLEAR FRAGMENTATION

We investigate an approach to the description of nuclear fragmentation relying on the concept of disorder which may characterise a fragmenti ng system of particles interacting by means of two-body short and long range potentials. We introduce different criteria in order to define clusters of bound nucleons. We work out the fragment content of events generated by means of numerical simulations. We analyse the moments o f mass and charge distributions and related observables, as well as th e energy content of the system. We discuss the outcome of the calculat ions in terms of the concept of universality which has been introduced in the field of nuclear fragmentation in the framework of percolation models.