索末菲参量对三重微分截面的影响  

THE INFLUENCE OF THE SOMMERFELD PARAMETERS ON THE TRIPLE DIFFERENTIAL CROSS SECTIONS

作　　者：张穗萌[1,2,3] 陈长进[1,2,3] 徐克尊 

机构地区：[1]安徽六安师范专科学校物理系 [2]安徽大学物理系 [3]中国科学技术大学近代物理系

出　　处：《原子与分子物理学报》1999年第2期243-248,共6页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金;安徽省教委科研基金

摘　　要：在前期工作的基础上，对非对称几何条件下波函数中的索末菲参量作了进一步的完善。研究了索末菲参量对三重微分截面（ＴＤＣＳ）产生的影响。用新的索末菲参量计算了低能电子入射离化氢原子的ＴＤＣＳ。Based on our earlier paper, the sommerfeld parameters in th BBK wave function are further modified in asymmetric geometry. The influence of the Sommerfeld parameters on the triple differential cross sections is considered. The triple differential cross sections for electron impact ionization of atomic hydrogen at low incident energies in asymmetric geometry are calculated by use of the modified sommerfeld parameters. The results were compared with those of the earlier paper and the theoretical results of the convergent colse-coupling method .It was found that the present results give a better description for the experimental data.

关 键 词：索末菲参量 有效电荷 三重微分截面 (E 2E) 

分 类 号：O561.5[理学—原子与分子物理]