摘要
We studied the effect of isospin dependent momentum interaction(IDMI) on the isospin fractionation ratio and its dynamical mechanism by using the quantum molecular dynamics model in intermediate energy heavy ion collisions. Fig.1 shows the (N/Z)nucl/(N/Z)frag at freeze-out time as a function of the neutron-proton ratio of colliding system with MDI and IDMI for the reactions 94Kr+94Kr,94Zr+94Zr, 94Mo+94Mo and 94Ru+94Ru at a beam energy of 50 MeV/u and an impact parameter of 2.0 fm. There are the same mass 188 for
We studied the effect of isospin dependent momentum interaction（IDMI）[1] on the isospin fractionation ratio and its dynamical mechanism by using the quantum molecular dynamics model in intermediate energy heavy ion collisions. Fig.1 shows the （N/Z）nucl/（N/Z）frag at freeze-out time as a function of the neutron-proton ratio of colliding system with MDI and IDMI for the reactions 9aKr＋94Kr,94Zr＋94Zr, 94Mo＋94Mo and 94Ru＋94Ru at a beam energy of 50 MeV/u and an impact parameter of 2.0 fro.
