中国物理B ›› 2001, Vol. 10 ›› Issue (4): 290-294.doi: 10.1088/1009-1963/10/4/305

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EXCHANGE AND FINAL CHANNEL SCREENING EFFECTS IN (e, 2e) PROCESSES

陈长进1, 徐克尊2   

  1. (1)Department of Physics, Anhui University, Hefei 230039, China; Laboratory of Atomic and Molecular Physics, University of Science and Technology of China, Hefei 230027, China; (2)Laboratory of Atomic and Molecular Physics, University of Science and Technology of China, Hefei 230027, China
  • 收稿日期:2000-09-07 出版日期:2001-04-15 发布日期:2005-07-11
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 19634040), the Natural Science Foundation of Anhui Province (Grant No. 99022022) and the Education Foundation of Anhui Province (Grant No. 97JL101).

EXCHANGE AND FINAL CHANNEL SCREENING EFFECTS IN (e, 2e) PROCESSES

Chen Zhang-jin (陈长进)ab, Xu Ke-zun (徐克尊)b   

  1. a Department of Physics, Anhui University, Hefei 230039, China; b Laboratory of Atomic and Molecular Physics, University of Science and Technology of China, Hefei 230027, China
  • Received:2000-09-07 Online:2001-04-15 Published:2005-07-11
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 19634040), the Natural Science Foundation of Anhui Province (Grant No. 99022022) and the Education Foundation of Anhui Province (Grant No. 97JL101).

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摘要： The DS3C model has been improved by taking into account the final channel screening effects. The triple differential cross sections for electron impact ionization of helium at an incident energy of 40 eV are considered. The results of the present DS3C model are compared with the absolute measurements and those of other theoretical models. It has also been shown in which situation the exchange effects are crucial.

Abstract: The DS3C model has been improved by taking into account the final channel screening effects. The triple differential cross sections for electron impact ionization of helium at an incident energy of 40 eV are considered. The results of the present DS3C model are compared with the absolute measurements and those of other theoretical models. It has also been shown in which situation the exchange effects are crucial.

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

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp
34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))