同位旋非对称核物质状态方程  

The equation of state of the isospin asymmetrical nuclear matter

作　　者：刘建业[1,2,3] 郭文军[4] 左维[2,3] 李希国[2,3] 

机构地区：[1]天水师范学院数理信息学院,天水741000 [2]中国科学院近代物理研究所,兰州730000 [3]中国科学院兰州重离子加速器国家实验室原子核理论中心,兰州730000 [4]上海理工大学,上海200093

出　　处：《物理学报》2009年第3期1517-1525,共9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~~

摘　　要：为了确定同位旋非对称核物质状态方程,利用同位旋有关的量子分子动力学理论计算和寻找实验上对于中能重离子碰撞中核子-核子碰撞截面或者对称势非常灵敏的物理观测量——探针.结果发现了几种分别对于核子-核子碰撞截面或者对称势非常灵敏的物理观测量.并对这些探针的机理进行了仔细研究,对以上研究结果进行小结和讨论,并为今后继续深入研究工作提出展望.In order to determine the equation of state in the sospin asymmetrical nuclear matter,we have been engaged in find an experimental observable which sensitively shows the information of the nucleon-nucleon cross section and the symmetry potential in the intermediate energy heavy ion collision by using the isospin dependent quantum molecular dynamics in recent years. As a result,we have found several sensitive probes for extracting the information of the in-medium nucleon-nucleon cross section and the symmetry potential in the equation of state of the isospin asymmetrical nuclear matter. The mechanism of the above probes are investigated in detail. A brief summary and comments on the above results and the prospect of finding more probes in the future are presented.

关 键 词：对称势 核子-核子碰撞截面 同位旋依赖性 机理 

分 类 号：O571.2[理学—粒子物理与原子核物理]