Dynamical nucleus-nucleus potential at short distances

Abstract

The dynamical nucleus-nucleus potentials for fusion reactions 40Ca+40Ca, 48Ca+208Pb and 126Sn+130Te are studied with the improved quantum molecular dynamics (ImQMD) model together with the extended Thomas-Fermi approximation for the kinetic energies of nuclei. The obtained fusion barrier for 40Ca+40Ca is in good agreement with the extracted fusion barrier from the measured fusion excitation function, and the depth of the fusion pockets are close to the results of time-dependent Hartree-Fock calculations. The energy dependence of fusion barrier is also investigated. For heavy fusion system, the fusion pocket becomes shallow and almost disappears for symmetric systems and the obtained potential at short distances is higher than the adiabatic potential.

6 figures, accepted for publication in Phys. Rev. C

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• Microscopic dynamics simulations of heavy-ion fusion reactions induced by neutron-rich nuclei
• Dynamical nucleus-nucleus potential and incompressibility of nuclear matter
• Systematic study of 16O-induced fusions with the improved quantum molecular dynamics model
• Microscopic dynamics simulations of multi-nucleon transfer in ${}^{86}$Kr+${}^{64}$Ni at 25 MeV/nucleon
• Energy-Dependence of Nucleus-Nucleus Potential and Friction Parameter in Fusion Reactions
• Fusion and quasi-fission dynamics in nearly-symmetric reactions
• Improvement on Fermionic properties and new isotope production in molecular dynamics simulations
• Determination of the nucleon-nucleon interaction in the ImQMD model by nuclear reaction at the Fermi energy region