Dynamical nucleus-nucleus potential at short distances

Details Dynamical nucleus-nucleus potential at short distances Dynamical nucleus-nucleus potential at short distances

2010-03-06

arxiv.org/abs/1003.1356v1

Phys.Rev.C81:044602,2010

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

10.1103/PhysRevC.81.044602

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.

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