Event generator for nuclear collisions at intermediate energies

Abstract

An event generator, HIPSE (heavy-ion phase-space exploration), dedicated to the description of nuclear collisions in the intermediate energy range is presented. Based on the sudden approximation and on geometrical hypothesis, it can conveniently simulate heavy-ion interactions at all impact parameters and thus can constitute a valuable tool for the understanding of processes such as neck emission or multifragmentation in peripheral or∕and central collisions. After a detailed description of the ingredients of the model, first comparisons with experimental data collected by the INDRA Collaboration are shown. Special emphasis is put on the kinematical characteristics of fragments and light particles observed at all impact parameters for $\text{Xe}+\text{Sn}$ reactions at 25 and $50\phantom{\rule{0.3em}{0ex}}\text{MeV}∕\mathrm{nucleon}$ and $\text{Ni}+\text{Ni}$ at $82\phantom{\rule{0.3em}{0ex}}\text{MeV}∕\mathrm{nucleon}$.