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

Probable Observable of Isospin Dependent Nucleon Nucleon Cross Section in Inter Mediate Energy Heavy Ion Collisions *

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

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.