摘要
研究了动量相关作用对于中子-质子比动能谱rb(Ek)的效应,发现rb(Ek)灵敏的依赖于动量相关作用而弱的依赖于介质中核子-核子碰撞截面和对称势.因此rb(Ek)是提取重离子碰撞中动量相关作用信息的可能探针.同时,对于丰中子弹核和相同质量稳定弹核在相同入射道条件下,丰中子碰撞系统明显加强了动量相关作用对rb(Ek)的效应.故两个碰撞系统rb(Ek)结果的比较为在重离子碰撞中提取动量相关作用的知识提供了另一个重要的判据。
The effects of momentum dependent interaction on the kinetic energy spectrum of the neutron-proton ratio rb(Ek) in the equation of state of nuclear matter was investigated.We found that the kinetic energy spectrum of the neutron-proton ratio rb(Ek) depends sensitively on the momentum dependent interaction and weakly on the in-medium nucleon-nucleon cross section and symmetry potential so that the rb(Ek) is a sensitive physical probe for extracting the information of momentum dependent interaction in the heavy ion collisions.At the same time,the comparing investigate between rb(Ek) for the neutron-rich collision system and the same mass stable collision system gives a important judgment for extracting the information of momentum dependent interaction in the heavy ion collisions.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第10期6933-6939,共7页
Acta Physica Sinica
基金
国家自然科学基金重点项目(批准号:10435080)
国家自然科学基金面上项目(批准号:10575075)
中国科学院知识创新工程重要方向项目(批准号:KJCXZ-SW-N02)资助的课题~~
关键词
核子-核子碰撞截面
对称势
动量相关作用
nucleon-nucleon collision cross section
symmetry potential
momentum dependent interaction