Nuclear multifragmentation by a percolation-evaporation picture

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Abstract
Secondary decays of excited nuclear fragments were incorporated into the bond percolation model of nuclear multifragmentation, assuming as sequential evaporations of nucleons or alpha -particles. Isotopic distributions of the nuclear fragments observed in high-energy proton-nucleus reactions were reproduced well when the primary fragments generated by the percolation model were taken to have a maximum excitation energy of 2.5A MeV. It was also found that the secondary decay processes do not smear the characteristic signals of a phase transition, a percolation transition.