【摘要】 基于同位旋相关量子分子动力学研究了中子晕核和质子晕核的核反应动力学,着重研究了松散的晕结构对于重离子碰撞中的碎裂和动量耗散中的特殊作用.为了突出晕核松散结构在反应动力学中的特殊作用.同时计算了在完全相同入射道条件下相等质量稳定弹核引起核反应.通过对晕核和稳定核核反应动力学结果的对比分析,发现晕核的松散结构对核反应动力学的作用和影响是重要的.如这种松散结构明显的增加了碎裂多重性;相反,减小了原子核阻止(动量耗散).更多还原

【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 ~ 19 B and proton-halo nucleus ~ 23 Al on the reaction dynamics we also calculated the the reaction dynamics induced by the stable nuclei ~ 19 F and ~ 23 Na 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.更多还原