中国物理B ›› 2000, Vol. 9 ›› Issue (10): 749-752.doi: 10.1088/1009-1963/9/10/006

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L-SHELL IONIZATION MEASUREMENT OF TUNGSTEN BY ELECTRON IMPACT

彭秀峰, 何福庆, 龙先灌, 安竹, 罗正明   

  1. State Key Laboratory for Radiation Physics and Technology of Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
  • 收稿日期:2000-01-21 修回日期:2000-06-07 出版日期:2000-12-25 发布日期:2005-06-10
  • 基金资助:
    Project supported by the National Nuclear Industry Science Foundation of China (Grant No. Y7197CY404).

L-SHELL IONIZATION MEASUREMENT OF TUNGSTEN BY ELECTRON IMPACT

Peng Xiu-feng (彭秀峰), He Fu-qing (何福庆), Long Xian-guan (龙先灌), An Zhu (安竹), Luo Zheng-ming (罗正明)   

  1. State Key Laboratory for Radiation Physics and Technology of Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
  • Received:2000-01-21 Revised:2000-06-07 Online:2000-12-25 Published:2005-06-10
  • Supported by:
    Project supported by the National Nuclear Industry Science Foundation of China (Grant No. Y7197CY404).

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摘要： L-shell partial production cross sections of Lα-, Lβ-, Lγ- rays by electron impact were measured by observing the counts of X-ray from impacted thin tungsten target. Total production cross sections and mean ionization cross sections were deduced from these measured results. The electron beam energy range was from 11 to 36 keV. Tungsten was sputtered onto a carbon backing to reduce bremsstrahlung of the backing. The effect of electrons reflected by the backing has been corrected. Comparison with two theoretical calculations has performed. The experimental results agree rather well with the theoretical predications.

Abstract: L-shell partial production cross sections of L$\alpha$-, L$\beta$-, L$\gamma$- rays by electron impact were measured by observing the counts of X-ray from impacted thin tungsten target. Total production cross sections and mean ionization cross sections were deduced from these measured results. The electron beam energy range was from 11 to 36 keV. Tungsten was sputtered onto a carbon backing to reduce bremsstrahlung of the backing. The effect of electrons reflected by the backing has been corrected. Comparison with two theoretical calculations has performed. The experimental results agree rather well with the theoretical predications.

Key words: electron impact, L-shell ionization, tungsten, cross section

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp
34.80.Nz (Spin dependence of cross sections; polarized beam experiments)