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中能重离子碰撞中同位旋相关核子–核子碰撞截面的可能观测量
引用本文:赵强,陈波,刘建业,张丰收,王顺金,陈列文,左维. 中能重离子碰撞中同位旋相关核子–核子碰撞截面的可能观测量[J]. 中国物理 C, 2000, 24(5): 426-430
作者姓名:赵强  陈波  刘建业  张丰收  王顺金  陈列文  左维
作者单位:[1]兰州重离子加速器国家实验室原子核理论中心 [2]西南交通大学现代物理研究所
基金项目:中国科学院资助项目,中国科学院科学基金,19775057,19847002,19775020,,,
摘    要:利用同位旋相关的量子分子动力学研究和寻找提取中能重离子碰撞多重碎裂中同位旋相关核子–核子碰撞截面的可能观测量.计算结果表明,在多重碎裂过程中中等质量碎片多重性与带电粒子总数之间的关联是在所选能区提取介质中同位旋相关核子–核子碰撞截面的灵敏观察量.应用重质量弹核打轻质量靶核具有反应产物向前角发射这一逆反应效应,可以在有限探测器条件下与实验相结合提取介质中同位旋相关的核子–核子碰撞截面.

关 键 词:重离子碰撞  多重碎裂  中等质量碎片多重性
收稿时间:1999-03-24

Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions
ZHAO Qiang,CHEN Bo,LIU JianYe,ZHANG FengShou,WANG ShunJin,CHEN LieWen,ZUO Wei. Probable Observable of Isospin Dependent Nucleon-Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions[J]. High Energy Physics and Nuclear Physics, 2000, 24(5): 426-430
Authors:ZHAO Qiang  CHEN Bo  LIU JianYe  ZHANG FengShou  WANG ShunJin  CHEN LieWen  ZUO Wei
Abstract:We have used the isospin dependent quantum molecular dynamics to investigate the probable observable for probing isospin dependent nucleon nucleon cross section in multifragmentation process of intermediate energy heavy ion collisions. The calculation results show that the correlation between the intermediate mass fragment multiplicity N imf and the total number of charged particles N c is a sensitive observable for probing in medium isospin dependent nucleon nucleon cross section in the chosen energy region. Because we apply the reversible reaction effect of heavy mass projectile on light mass target in the chosen energy region, which result in more intermediate mass products emitted towards forward angles, it is convenient to extract in medium isospin dependent nucleon nucleon cross sections by combining theory simulations and experimental observations under the conditions of limited detectors.
Keywords:heavy ion collision   multifragmentation   multiplicity of intermediate mass fragment  
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