Isospin momentum-dependent interaction and its role on the isospin fractionation ratio in intermediate energy heavy ion collisions

被引：0
|
作者：
Liu, JY [1 ]
Guo, WJ
Xing, YZ
Lee, XG
机构：
[1] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
[2] Tianshui Normal Coll, Dept Phys, Tianshui 741000, Peoples R China
[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2005年 / 22卷 / 01期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the role of isospin momentum-dependent interaction on the isospin fractionation ratio and its dynamical mechanism in the intermediate energy heavy ion collisions, by inserting an isospin de degree of freedom into the momentum-dependent interaction to obtain all isospin momentum-dependent interaction given in a form practically usable in the isospin-dependent quantum molecular dynamics model. It is found that the isospin momentum-dependent interaction brings an important isospin effect, into the isospin fractionation ratio. In particular, the isospin momentum-dependent interaction reduces obviously the reduction of isospin fractionation ratio. Thus the isospin dependence of momentum-dependent, interaction is thus important for studying accurately the equation of state of isospin asymmetry nuclear matter.
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页码：65 / 68
页数：4
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