The influence of Isospin Dependence of In-Medium NN Cross Sections on the Ratio of Emitted Neutrons to Protons in HICs
The influence of Isospin Dependence of In-Medium NN Cross Sections on the Ratio of Emitted Neutrons to Protons in HICs作者机构：Institute of Theoretical Physics Shanxi University Taiyuan 030006 China Institute of Atomic Energy PO Box 275(18) Beijing 102413
出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)
年 卷 期：2009年第26卷第7期
页 面：93-96页
核心收录：
学科分类：08[工学] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学]
基 金：Supported by the National Natural Science Foundation of China under Grant Nos 10675172 10675077 and 10875031 and the National Basic Research Program of China under Grant No 2007CB209900.
主 题：HEAVY-ION COLLISIONS ISOSCALING BEHAVIOR SYMMETRY ENERGY FLOW EQUATION STATE MODEL
摘 要：The influence of isospin dependence of in-medium nucleon-nucleon cross sections on the nip ratios for emitted nucleons in reactions 96Zr-j-96Zr and 96Ru-j-96RH at Eb z 400 AMeV is investigated by means of an improved quantum molecular dynamics model. Our results show that the high energy part of the spectra of the n//p ratios for emitted nucleons is sensitive to the isospin dependence of in-medium nucleon-nucleon cross sections for neutron-rich reaction systems. Therefore, we propose that the nip ratio of emitted high energy nucleons in a very neutron-rich reaction system at several hundreds of AMeV can be taken as sensitive observables to constrain the isospindependence of in-medium nucleon-nucleon cross sections.
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