中国物理B ›› 2004, Vol. 13 ›› Issue (5): 670-676.doi: 10.1088/1009-1963/13/5/017

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Ionization for Hf- and W-L-shell by electron impact

杨代伦, 罗小兵, 傅玉川, 何福庆, 龙先灌, 彭秀峰, 罗正明   

  1. Key Laboratory for Radiation Physics and Technology of the Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
  • 收稿日期:2003-05-30 修回日期:2003-11-26 出版日期:2004-05-06 发布日期:2005-07-06
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China (Grant No 19874045), and by the International Atomic Energy Agency, IAEA Research Contract No. 12354/RO/RBF.

Ionization for Hf- and W-L-shell by electron impact

Yang Dai-Lun (杨代伦), Luo Xiao-Bing (罗小兵), Fu Yu-Chuan (傅玉川), He Fu-Qing (何福庆), Long Xian-Guan (龙先灌), Peng Xiu-Feng (彭秀峰), Luo Zheng-Ming (罗正明)   

  1. Key Laboratory for Radiation Physics and Technology of the Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
  • Received:2003-05-30 Revised:2003-11-26 Online:2004-05-06 Published:2005-07-06
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China (Grant No 19874045), and by the International Atomic Energy Agency, IAEA Research Contract No. 12354/RO/RBF.

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摘要： Electron-induced Hf-, W-L-shell partial, total production cross sections, mean ionization cross sections and Hf-L_3-shell ionization cross sections (at two energies) have been measured as functions of electron energies (from near threshold to 36keV). The influence of electrons reflected from the backing of the thin targets on measured results was corrected using a model to relate to the electron transport process. The mean paths of electron multi-scattered in the target itself (including forward and backward scattering) were calculated by means of Monte Carlo program (EGS4) and they were used to correct measured results. A comparison with both theoretical predictions was given.

关键词: tungsten, hafnium, L-shell ionization, electron impact

Abstract: Electron-induced Hf-, W-L-shell partial, total production cross sections, mean ionization cross sections and Hf-L$_3$-shell ionization cross sections (at two energies) have been measured as functions of electron energies (from near threshold to 36keV). The influence of electrons reflected from the backing of the thin targets on measured results was corrected using a model to relate to the electron transport process. The mean paths of electron multi-scattered in the target itself (including forward and backward scattering) were calculated by means of Monte Carlo program (EGS4) and they were used to correct measured results. A comparison with both theoretical predictions was given.

Key words: tungsten, hafnium, L-shell ionization, electron impact

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp