中高能质子入射反应散裂碎片的半经验方法研究  

Semi-empirical Research on Spallation Production of Proton Induced Nuclear Reaction with Medium-high Energy

作　　者：张鸿洲[1] 樊胜[1] 孙秀泉[2] 

机构地区：[1]中国原子能科学研究院 [2]深圳大学工程技术学院

出　　处：《原子核物理评论》2004年第4期394-397,共4页Nuclear Physics Review

基　　金：国家重点基础研究发展规划资助项目(G1999022600);国家自然科学基金资助项目(10305021)~~

摘　　要：简要分析了质子入射核反应的半经验研究方法,指出半经验研究方法应该建立在独立产额数据之上,而目前半经验研究方法主要是建立在以往的累积产额数据之上.通过对最新的实验得到的独立产额数据并结合MSDM的计算结果的分析,发现描述散裂质量分布的参数应该分为与能量有关和无关两个部分,并指出这与快过程平衡时间的不同有关.We analyzed the former solution of semi-empirical methods, which is first funded by G. Rudstam. On this basis, we pointed out that all the former solutions are basically based on so-called cumulative reaction data not on independent data. On the analysis of newly data measured by GSI, we founded that mass distribution of spalltion production could be divided to two parts: one is independent on induced-energy, but on the mass number of target; one is dependent on energy. Also, we argued that such phenomenon is duce to different quick process in high energy proton-nucleus collision. On the basis of this find, we developed the semi-empirical method, and the calculation is well reproduced the experiment data.

关 键 词：半经验方法 高能质子 产额 质量分布 碎片 核反应 独立 实验 分析 发现 

分 类 号：O571[理学—粒子物理与原子核物理] O422[理学—物理]