摘要
The entrance channel dependence of the isospin effects of nuclear stopping in intermediate energy heavy-ion collisions has been studied by using an isospin-dependent quantum molecular dynamics with three different kinds of symmetry potentials.It is shown that nuclear stopping is sensitive to the beam energy,the impact parameter and the mass of the colliding system,specially very sensitive to the isospin dependence of in-medium nucleon-nucleon cross section,but insensitive to symmetry potential and the ratio of neutron to proton of colliding system.From this investigation.It is proposed that nuclear stopping can be used as a new probe to extract the information on the isospin dependence of in-medium nucleon-nucleon cross section in intermediate energy heavy-ion collisions.
基金
Supported in part by the Major State Basic Research Development Program under Contract No.G2000077400
100 Person Project of the Chinese Academy of Sciences
the National Natural Science Foundation of China under Grant Nos.10004012 and 19775020
the Foundation of Chinese Academy of Sciences(No.KJ951-A1-410).
