中国物理B ›› 2014, Vol. 23 ›› Issue (11): 113402-113402.doi: 10.1088/1674-1056/23/11/113402

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Polarization effect in (e, 2e) reaction process for Ar (3s) in coplanar asymmetric geometry

周丽霞, 王殿生, 燕友果, 王彩玲   

  1. College of Science, China University of Petroleum, Qingdao 266580, China
  • 收稿日期:2014-03-21 修回日期:2014-06-08 出版日期:2014-11-15 发布日期:2014-11-15
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities of China (Grant Nos. 13CX02019A and 13CX05017A).

Polarization effect in (e, 2e) reaction process for Ar (3s) in coplanar asymmetric geometry

Zhou Li-Xia (周丽霞), Wang Dian-Sheng (王殿生), Yan You-Guo (燕友果), Wang Cai-Ling (王彩玲)   

  1. College of Science, China University of Petroleum, Qingdao 266580, China
  • Received:2014-03-21 Revised:2014-06-08 Online:2014-11-15 Published:2014-11-15
  • Contact: Yan You-Guo E-mail:yyg@upc.edu.cn
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities of China (Grant Nos. 13CX02019A and 13CX05017A).

摘要: The (e, 2e) triple differential cross sections (TDCSs) of Ar (3s) are calculated by using distorted-wave Born approximation under coplanar asymmetric geometry. The incident electron energy is 113.5 eV, and the scattering electron angle θ1 is -15°. The ejected electron energy is set at 10 eV, 7.5 eV, 5 eV, and 2 eV, respectively. The polarization effects have been discussed and the polarization potential Vpol changing from a second-order to a fourth-order term has been analyzed. Our calculated TDCSs have been compared with reported experimental and theoretical results, and the calculated TDCSs of polarization potential up to the fourth order could give a good fit with experimental results in the binary region, but fail to predict the correct recoil-to-binary ratio in most cases.

关键词: (e, 2e) reaction, distorted-wave Born approximation, triple differential cross sections, polarization effect

Abstract: The (e, 2e) triple differential cross sections (TDCSs) of Ar (3s) are calculated by using distorted-wave Born approximation under coplanar asymmetric geometry. The incident electron energy is 113.5 eV, and the scattering electron angle θ1 is -15°. The ejected electron energy is set at 10 eV, 7.5 eV, 5 eV, and 2 eV, respectively. The polarization effects have been discussed and the polarization potential Vpol changing from a second-order to a fourth-order term has been analyzed. Our calculated TDCSs have been compared with reported experimental and theoretical results, and the calculated TDCSs of polarization potential up to the fourth order could give a good fit with experimental results in the binary region, but fail to predict the correct recoil-to-binary ratio in most cases.

Key words: (e,2e) reaction, distorted-wave Born approximation, triple differential cross sections, polarization effect

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp
34.50.Fa (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))