Special Roles of Proton-halo Nucleus Structure on Momentum Dissipation in Heavy Ion Collisions

摘要

We studied the special roles of proton-halo structure of 23Al on the momentum dissipation by using isospin dependent quantum molecular dynamics. In order to protrude the special roles of proton-halo structure on the reaction dynamics we compared the nuclear stopping (momentum dissipation) induced by proton-halo nucleus 23Al with those induced by a same mass stable nucleus 23Na. Fig.1 shows the nuclear stopping R at freeze out time for the reactions 23Al +48Ca and 23Na +48Ca at impact parameter 6=1.0 fm as a function of