title: Nuclear stopping as a probe for in-medium nucleon-nucleon cross sections in intermediate energy heavy ion collisions.
abstract: Using an isospin-dependent quantum molecular dynamics, nuclear stopping in intermediate heavy ion collisions has been studied. The calculation has been done for colliding systems with different neutron-proton ratios in beam energy ranging from 15 MeV/ u to 150 MeV/ u. It is found that, in the energy region from above Fermi energy to 150 MeV/ u, nuclear stopping is very sensitive to the isospin dependence of in-medium nucleon-nucleon cross section, but insensitive to symmetry potential. From this investigation, we propose 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.
authors.affiliation: Center of Theoretrical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou, People's Republic of China.
authors.forename: J Y
authors.initials: JY
authors.lastname: Liu
authors.forename: W J
authors.initials: WJ
authors.lastname: Guo
authors.forename: S J
authors.initials: SJ
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Zuo
authors.forename: Q
authors.initials: Q
authors.lastname: Zhao
authors.forename: Y F
authors.initials: YF
authors.lastname: Yang