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)
State Key Laboratory for Radiation Physics and Technology of Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
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.
Received: 21 January 2000
Revised: 07 June 2000
Accepted manuscript online:
(Spin dependence of cross sections; polarized beam experiments)
Fund: Project supported by the National Nuclear Industry Science Foundation of China (Grant No. Y7197CY404).
Cite this article:
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) L-SHELL IONIZATION MEASUREMENT OF TUNGSTEN BY ELECTRON IMPACT 2000 Chinese Physics 9 749
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
