中国物理B ›› 2014, Vol. 23 ›› Issue (6): 63402-063402.doi: 10.1088/1674-1056/23/6/063402

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Second-order Born calculation of coplanar symmetric (e, 2e) process on Mg

张永志a, 王旸b, 周雅君b   

  1. a Academy of Physical Science and Technology, Heilongjiang University, Harbin 150080, China;
    b Center for Theoretical Atomic and Molecular Physics, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
  • 收稿日期:2013-09-24 修回日期:2013-12-10 出版日期:2014-06-15 发布日期:2014-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11174066).

Second-order Born calculation of coplanar symmetric (e, 2e) process on Mg

Zhang Yong-Zhi (张永志)a, Wang Yang (王旸)b, Zhou Ya-Jun (周雅君)b   

  1. a Academy of Physical Science and Technology, Heilongjiang University, Harbin 150080, China;
    b Center for Theoretical Atomic and Molecular Physics, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
  • Received:2013-09-24 Revised:2013-12-10 Online:2014-06-15 Published:2014-06-15
  • Contact: Wang Yang E-mail:yangwang0624@foxmail.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11174066).

摘要: The second-order distorted wave Born approximation (DWBA) method is employed to investigate the triple differential cross sections (TDCS) of coplanar doubly symmetric (e, 2e) collisions for magnesium at excess energies of 6 eV-20 eV. Comparing with the standard first-order DWBA calculations, the inclusion of the second-order Born term in the scattering amplitude improves the degree of agreement with experiments, especially for backward scattering region of TDCS. This indicates that the present second-order Born term is capable to give a reasonable correction to DWBA model in studying coplanar symmetric (e, 2e) problems of two-valence-electron target in low energy range.

关键词: second-order Born approximation, (e, 2e) collisions, magnesium, triple differential cross section

Abstract: The second-order distorted wave Born approximation (DWBA) method is employed to investigate the triple differential cross sections (TDCS) of coplanar doubly symmetric (e, 2e) collisions for magnesium at excess energies of 6 eV-20 eV. Comparing with the standard first-order DWBA calculations, the inclusion of the second-order Born term in the scattering amplitude improves the degree of agreement with experiments, especially for backward scattering region of TDCS. This indicates that the present second-order Born term is capable to give a reasonable correction to DWBA model in studying coplanar symmetric (e, 2e) problems of two-valence-electron target in low energy range.

Key words: second-order Born approximation, (e, 2e) collisions, magnesium, triple differential cross section

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp