Nuclear reaction dynamics induced by halo-nuclei at intermediate energy heavy ion collisions

Abstract

We studied systematically the reaction dynamics induced by neutron-halo nuclei and proton-halo nuclei within the isospin dependent quantum molecular dynamics,such as the effects of loose bound halo-nuclei on the fragmentation reaction and momentum dissipation for different colliding systems with different beam energies and different impact parameters. In order to emphasize the roles of neutron-halo nucleus 19B and proton-halo nucleus 23Al on the reaction dynamics wealso calculated the the reaction dynamics induced by the stable nuclei 19F and 23Na with equal mass under identical incident channel conditions. Based on the comparison of results of reaction dynamics induced by halo-nucleus colliding systems and stable nucleus collidinmg systems we found that the roles of loose bound halo-nucleus structure on the fragmentation multiplicity and nuclear stopping (momentum dissipation) are important for all of colliding systems with different beam energies and minor impact parameters, such as, the loose bound halo-nuclei structure increases the fragmentation multiplicity, but reduces the nuclear stopping.

Density-dependent potential for multi-neutron halo nuclei

“…The effective interactions in the weakly bound nuclei may be correlated with the matter density. We know that the density-dependent effective interactions have been successfully applied to the nucleus-nucleus scattering [17][18][19] and the cluster structure in nuclei [20][21][22][23][24][25][26] . It may be appropriate to bring this type of potential into the calculation of the structure of halo nuclei.…”

Density effect of the neutron halo nucleus induced reactions in intermediate energy heavy ion collisions

“…The investigations of the halo structure and the reaction dynamics induced by halo nuclei have made great progress experimentally and theoretically [1][2][3][4][5][6][7][8][9] over the last few years. The wave function of the valence nucleon in halo nucleus is expected to extend far beyond the standard nuclear size, which results in small separation energy and narrow momentum distribution.…”