Improved quantum molecular dynamics model and its applications to fusion reaction near barrier

An improved quantum molecular dynamics model is developed. By using this model, the properties of ground state of nuclei from ⁶Li to ²⁰⁸Pb are described very well with one set of parameters. The fusion reactions for ⁴⁰Ca+⁹⁰Zr, ⁴⁰Ca+⁹⁶Zr, and ⁴⁸Ca+⁹⁰Zr at energies near the barrier are studied by this model. The experimental data of the fusion cross sections for ⁴⁰Ca+^90,96Zr at energies near the barrier are reproduced remarkably well without introducing any new parameters. The mechanism for the enhancement of the fusion cross sections for neutron-rich nuclear reaction near barrier is analyzed.