Isospin Effect on Nuclear Stopping in Intermediate Energy Heavy Ion Collisions

By using the isospin-dependent quantum molecular dynamics model, we study the dependence of nuclear stopping Q_ZZ/A and R in intermediate energy heavy ion collisions on system size, initial N/Z, isospin symmetry potential and the medium correction of two-body cross sections. We find the effect of initial N/Z ratio, isospin symmetry potential on stopping is weak. The excitation function of Q_ZZ/A and R depends on the form of medium correction of two-body cross sections, the equation of state of nuclear matter. Our results show the behaviour of the excitation function of Q_ZZ/A and R can provide clearer information of the isospin dependence of the medium correction of two-body cross sections.