Symmetry energy and the isospin dependent equation of state
Abstract
The isoscaling parameter α, from the fragments produced in the multifragmentation of 58Ni + 58Ni, 58Fe + 58Ni and 58Fe + 58Fe reactions at 30, 40 and 47 MeV/nucleon, was compared with that predicted by the antisymmetrized molecular dynamic (AMD) calculation based on two different nucleon-nucleon effective forces, namely the Gogny and Gogny-AS interaction. The results show that the data agrees better with the choice of Gogny-AS effective interaction, resulting in a symmetry energy of 18-20 MeV. The observed value indicate that the fragments are formed at a reduced density of 0.08 fm-3.
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