ENERGETIC PROTONS AND COLD NUCLEAR MULTIFRAGMENTATION PATTERN

Multifragmentation is studied in correlation with energetic protons. A cold multifragmentation pattern is proposed based on the numerical si mulation of the stochastic Boltzmann-Langevin model to describe the in termediate heavy ion collisions, i.e., a sizeable fraction of the avai lable energy is released from the system by fast non-equilibrium proto n emission, in which the explosion is caused by a violent but cold exp ansion of the system. Some typical examples simulated for Ca-40+Ca-40 central collisions at 90 MeV/u are presented. A possible experimental signature which could be detected using a 4 pi detector system is sugg ested.