Entrance channel dependence of the isospin effects of the nuclear stoppingin intermediate energy heavy-ion collisions

The entrance channel dependence of the isospin effects of nuclear stopping in intermediate energy heavy-ion collisions has been studied by using an is ospin-dependent quantum molecular dynamics with three different kinds of sy mmetry potentials. It is shown that nuclear stopping is sensitive to the be am energy, the impact parameter and the mass of the colliding system, espec ially very sensitive to the isospin dependence of the in-medium nucleon-nuc leon cross section, but insensitive to the symmetry potential and the neutr on-to-proton ratio of the colliding system. From this investigation, it is proposed that nuclear stopping can be used as a new probe to extract the in formation on the isospin dependence of the in-medium nucleon-nucleon cross section in intermediate energy heavy-ion collisions.