摘要
在在中央碰撞的 Ca-40 + Ca-40 和 Ca-48+ Ca-48 的反应的光线的流动的阀值精力在 isospin 依赖者量以内被调查由使用对称精力的三种不同形式的分子的动力学模型。neutron-richsystem 有光线的流动的更小的阀值精力，这数量取决于对称潜力的形式，这被发现。光线的流动的阀值精力能提供一个新方法决定不对称的原子物质的对称精力，这被显示。
The threshold energies of radial flow in reactions of ^40 Ca-^40Ca and ^48Ca＋ ^48Ca 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 this quantity depends on the form of symmetry potential. It is indicated that the threshold energy of radial flow can provide a new method to determine the symmetry energy of asymmetric nuclear matter.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 10575012 and 10435020, the Science Foundation of Beljlng, and the Science Foundation of Beijing Normal University.
关键词
辐射流
重金属离子
能量
离子碰撞
PROJECTILE FRAGMENT SEPARATOR
INTERMEDIATE ENERGIES
NUCLEARMULTIFRAGMENTATION
COLLECTIVE EXPANSION
AU+AU COLLISIONS
DEPENDENCE
EQUATION
MODEL
STATE
RING
