摘要
基于同位旋相关的量子分子动力学模型,采用三种不同形式的对称势,研究了124Sn+124Sn和124Ba+124Ba对心碰撞时在三种不同对称势下的径向膨胀流,发现径向膨胀流阈能与所采用的对称能形式密切相关,表现出明显同位旋效应,预示着径向膨胀流阈能的同位旋相关性可作为对称能的灵敏探针.
The threshold energies of radial flow in reactions of 124^ Sn ＋ 124 ^Sn and 124^ Ba ＋ 124^ Ba in central collisions are investigated within an isospin dependent quantum molecular dynamics model by using three different forms of symmetry energy. It is found that the neutron-rich system has smaller threshold energy of radial flow and its value depends strongly on the form of symmetry energy. It indicates that the threshold energy of radial flow may provide a new method to determine the symmetry energy of nuclear matter.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第3期1334-1338,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10575012
10435020)
北京市教育委员会共建项目计划和北京师范大学科研基金资助的课题.~~
