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中国科学院大学学报 ›› 2005, Vol. 22 ›› Issue (5): 560-567.DOI: 10.7523/j.issn.2095-6134.2005.5.005

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中能丰中子核反应的HBT研究(英文)

魏义彬1,2, 马余刚1, 王鲲1,2, 马国亮1,2, 蔡翔舟1, 钟晨1,2, 郭威1,2, 陈金根1,2, 方德清1, 田文栋1, 沈文庆1   

  1. 1. 中国科学院上海应用物理研究所, 上海 201800;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2004-06-11 修回日期:2004-12-09 发布日期:2005-09-15
  • 通讯作者: 马余刚,E-mail:ygma@sinr.ac.cn

HBT Study of the Nuclear Reaction with Exotic Nuclei at Intermediate Energy

WEI Yi-Bin1,2, MA Yu-Gang1, WANG Kun1,2, MA Guo-Liang1,2, CAI Xiang-Zhou1, ZHONG Chen1,2, GUO Wei1,2, CHEN Jin-Gen1,2, FANG De-Qing1, TIAN Wen-Dong1, SHEN Wen-Qing1   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2004-06-11 Revised:2004-12-09 Published:2005-09-15
  • Supported by:

    supported in part by the Major State Basic Research Development Program (G20077404), the Chinese Academy of Sciences Grant for the Distinguished Young Scholars of National Natural Science Foundation of China (19725521), the National Natural Science Foundation of China (10135030 、10328509)

摘要:

采用同位旋相关的量子分子动力学模型(Isospin-Dependent Quantum Molecular Dynamicsmodel IDQMD),把HBT方法应用于核物质的性质研究.计算结果显示,HBT方法得到的关联函数强度可以很好地表征原子核内部核子之间联系的紧密程度,且原子核内部核子之间的关联函数强度与表征核子之间联系紧密程度的物理量存在着近似线形的关系.另外核物质状态方程(EOS)的HBT研究,也对确定合适的核物质状态方程具有重要的意义.

关键词: IDQMD模型, 关联函数, 中能核反应

Abstract:

Hanbury Brown-Twiss (HBT)results of the nucleon-nucleon correlation function have been presented for the nuclear reactions with neutron-rich projectiles (Be isotopes)using an event-generator, the Isospin-Dependent Quantum Molecular Dynamics model.It discusses the relationship between the binding energy per nucleon of the projectiles and the strength of the neutron-proton HBT at small relative momentum.Moreover, the relationship between the single neutron separation energy and the strength of the halo neutron-proton HBT is revealed.Results show that neutron-proton HBT results are sensitive to binding energy or separation energy.Some researches about the Equation of State (EOS)have been completed,which show that the HBT results are also sensitive to the parameters of the EOS.

Key words: IDQMD model, correlation function, nuclei reaction at intermediate energy

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