Isotopic yields in peripheral heavy-ion collisions

Abstract

We have calculated production cross sections and isotopic distributions of the projectilefragments emerging from the reactions 112,124Sn + 112,124Snat 50 MeV/nucleon incident beam energy, performed at the cyclotron of Michigan State University (MSU). For the interpretation of the data, we carriedout the calculations within the statistical multifragmentation model (SMM). Thepossible modification of symmetry energy parameter, in the multifragmentationregion at the low density freeze-out has been studied. It is shown that a significant reductionof the symmetry energy term is found necessary to reproduce experimental data.The results are in agreement with recent findings.