中国物理B ›› 2002, Vol. 11 ›› Issue (7): 704-709.doi: 10.1088/1009-1963/11/7/311

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Electron-impact ionization of Li+(1s2) in the coplanar equal energy-sharing geometry

贾祥富, 刘明海   

  1. Department of Physics, Shanxi Teachers University, Linfen 041004, China
  • 收稿日期:2001-06-30 修回日期:2002-01-16 出版日期:2002-07-12 发布日期:2005-06-12
  • 基金资助:
    Project supported by the Natural Science Foundation of Shanxi Province, China (Grant No 20001008) and the Science Foundation for Returnee of Shanxi Province, China (Grant No (99)13).

Electron-impact ionization of Li+(1s2) in the coplanar equal energy-sharing geometry

Jia Xiang-Fu (贾祥富), Liu Ming-Hai (刘明海)   

  1. Department of Physics, Shanxi Teachers University, Linfen 041004, China
  • Received:2001-06-30 Revised:2002-01-16 Online:2002-07-12 Published:2005-06-12
  • Supported by:
    Project supported by the Natural Science Foundation of Shanxi Province, China (Grant No 20001008) and the Science Foundation for Returnee of Shanxi Province, China (Grant No (99)13).

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摘要： In this paper, the triple differential cross section for the low-energy electron impact ionization of the Li+ ion is considered in the coplanar equal energy-sharing kinematics at an incident energy of 114.083 eV. The emergence of structures in the calculated cross sections is explained in terms of isolated two-body final-state interactions and three-body coupling. The cross section shows two peaks originating from ′classical′ is determined by two-body final-state interactions. In addition, it is demonstrated that the signature of three-body interactions is carried by the magnitude and ratio of these two peaks. The direct and exchange amplitudes are also considered.

Abstract: In this paper, the triple differential cross section for the low-energy electron impact ionization of the Li+ ion is considered in the coplanar equal energy-sharing kinematics at an incident energy of 114.083 eV. The emergence of structures in the calculated cross sections is explained in terms of isolated two-body final-state interactions and three-body coupling. The cross section shows two peaks originating from ′classical′ is determined by two-body final-state interactions. In addition, it is demonstrated that the signature of three-body interactions is carried by the magnitude and ratio of these two peaks. The direct and exchange amplitudes are also considered.

Key words: (e, 2e) triple differential cross sections, screening effects, Coulomb interaction, exchange effects

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp
34.70.+e (Charge transfer)