Singly and Doubly Charged Projectile Fragments in Nucleus-Emulsion Collisions at Dubna Energy in the Framework of the Multi-Source Model  

作　　者：WANG Er-Qin LIU Fu-Hu Magda ARahim SFakhraddin SUN Jian-Xin 王二琴;刘福虎;Magda ARahim;SFakhraddin;孙建新(Institute of Theoretical Physics,Shanxi University,Taiyuan 030006;Department of Physics,Faculty of Science,Sana'a University,Republic of Yemen;School of Engineering,Shanxi Datong University,Datong 037003)

机构地区：[1]Institute of Theoretical Physics,Shanxi University,Taiyuan 030006 [2]Department of Physics,Faculty of Science,Sana'a University,Republic of Yemen [3]School of Engineering,Shanxi Datong University,Datong 037003

出　　处：《Chinese Physics Letters》2011年第8期54-57,共4页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China under Grant No 10975095;the Open Research Subject of the CAS Large-Scale Scientific Facility under Grant No 2060205.

摘　　要：The multiplicity distributions of projectile fragments emitted in interactions of different nuclei with emulsion are studied by using a multi-source model.Our calculated results show that the projectile fragments can be described by the model and each source contributes an exponential distribution.As the weighted sum of the folding result of many exponential distributions,a multi-component Erlang distribution is used to describe the experimental data.The relationship between the height(or width)of the distribution and the mass of the incident projectile,as well as the dependence of projectile fragments on target groups,are investigated too.

关 键 词：EXPONENTIAL distribution COLLISIONS 

分 类 号：O57[理学—粒子物理与原子核物理]