Probing the density dependence of the symmetry potential with peripheral heavy-ion collisions

Abstract

The peripheral heavy-ion collisions of ${}^{112,124}Sn{+}^{86}Kr$ at $E_b=25AMeV$ are studied by means of the Improved Quantum Molecular Dynamics Model(ImQMD). It is shown that the slope of the average N/Z ratio of emitted nucleons vs impact parameters for these reactions is very sensitive to the density dependence of the symmetry energy. Our study also shows that the yields of ${}^{3}H$ and ${}^{3}He$ decrease with impact parameters and slope of the yield of ${}^{3}H$ vs impact parameters as well as the ratio of Y(${}^{3}H$)/Y(${}^{3}He$) depend on the symmetry potential strongly for peripheral heavy-ion collisions.

Comments: 10 pages,6 figures, accepted by Phys.Rev.C