Heavy Ion Fusion Reactions around the Coulomb Barrier

Abstract

The LISE++ package is used to simulate heavy ion fusion reactions. The simulations are done using the code PACE4 at energies around the Coulomb barrier. Formation of compound nucleus (CN) and evaporation residues in the interactions of 28Si with 76Ge and 30Si with 74Ge is studied as a function of incident beam energy. These two systems are chosen because they populate the same compound nucleus 104Pd. Simulations are performed for estimating complete fusion cross sections from 20% below to 20% above the Coulomb barrier. The effect of varying the beam energy was analysed by plotting partial cross sections as a function of total angular momentum, the change in angular distribution of evaporation residues with beam energy and the angular distribution of protons, neutrons and alpha particles.