Microscopic study of the 132,124Sn+96Zr reactions: Dynamic excitation energy, energy-dependent heavy-ion potential, and capture cross section

We study reactions between neutron-rich 132Sn nucleus and 96Zr within a dynamic microscopic theory at energies in the vicinity of the ion-ion potential barrier peak, and we compare the properties to those of the stable system 124Sn+96Zr. The calculations are carried out on a three-dimensional lattice using the density-constrained time-dependent Hartree-Fock method. In particular, we calculate the dynamic excitation energy E*(t) during the initial stages of the collision. The barrier heights and widths of the heavy-ion potential increase substantially with Ec.m. energy. The capture cross sections for the two reactions are of similar magnitude, but the interaction barrier for the neutron-rich system is found to be significantly (9 MeV) lower. A comparison with recently measured data is given.