Cross Sections of Elastic Electron and Positron Scattering from Proton-Rich Nuclei  

作　　者：马二俊 马余刚 陈金根 蔡翔舟 方德清 郭威 刘桂华 马春旺 沈文庆 石钰 苏前敏 田文栋 王宏伟 王鲲 颜廷志 

机构地区：[1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800 [2]Changshu Institute of Technology, Changshu 215500 [3]Graduate School of Chinese Academy of Sciences, Beijing 100039

出　　处：《Chinese Physics Letters》2006年第10期2695-2698,共4页中国物理快报（英文版）

基　　金：Supported partially by the Shanghai Development Foundation from Science and Technology under Grant Nos 05XD14021 and 06QA14062, the National Natural Science Foundation of China under Grant No 10328259, 10135030 and 10535010, and the Major State Basic Research and Development Programme under Grant No G200077404.

摘　　要：We investigate the cross sections of the elastic electron or positron scat tering from 208 Pb, ^12C ^12,16O and ^28,32S by the relativistic partial-wave expansion method using the static charge density distribution from the self-consistent relativistic mean fiel model and also calculate the charge form factor for ^12＇16O and ^28,32S. The numerical results are compared with the available data. Calculations indicate that the extended charge density distributions of ^12O and ^28S have observable effects on the cross sections of the electron or positron scattering as well as the charge form factors.We investigate the cross sections of the elastic electron or positron scat tering from 208 Pb, ^12C ^12,16O and ^28,32S by the relativistic partial-wave expansion method using the static charge density distribution from the self-consistent relativistic mean fiel model and also calculate the charge form factor for ^12＇16O and ^28,32S. The numerical results are compared with the available data. Calculations indicate that the extended charge density distributions of ^12O and ^28S have observable effects on the cross sections of the electron or positron scattering as well as the charge form factors.

关 键 词：RELATIVISTIC-MEAN-FIELD FINITE NUCLEI EXOTIC STRUCTURE SHELL SI-28 HALOS MODEL 

分 类 号：O571[理学—粒子物理与原子核物理]