Isospin effect of nucleon-nucleon cross section on the isoscaling parameter α

被引：1
|
作者：
Liu Jian-Ye [1 ,2 ,3 ]
Guo Won-Jun [4 ]
Zuo Wei [2 ,3 ]
Lee Xi-Guo [2 ,3 ]
机构：
[1] Tianshui Normal Univ, Coll Math Phys & Informat, Tianshui 741000, Peoples R China
[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[3] Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
[4] Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China
来源：
ACTA PHYSICA SINICA | 2008年 / 57卷 / 09期
基金：
中国国家自然科学基金;
关键词：
isospin effect; nucleon-nucleon cross section; mechanism; isoscaling;
D O I：
10.7498/aps.57.5458
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The isospin effects of isoscaling parameter a on the nucleon-nucleon cross section are investigated for two couples of central nuclear reactions (40) C + (40) Ca with (60) Ca + (40) Ca and (112) Sn + (112) Sn with (124) Sn + (124) Sn within an isospin dependent quantum molecular dynamics. It is found that the isospin effect of isoscaling parameter a on the isospin dependent nucleon-nucleon cross section sigma(med)(NN)(alpha(m)) compared with that on the isospin independent nucleon-nucleon cross sections sigma(1)(NN) (alpha(m)) is very obvious. However, the isospin effect of isoscaling parameter alpha on sigma(med)(NN) (alpha(m)) compared with that on the isospin independent nucleon-nucleon cross section sigma(2)(NN) (alpha(m)) is small. The mechanisms for the above difference are investigated in detail.
引用
收藏
页码：5458 / 5463
页数：6
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