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An Empirical Formula of Atomic K-Shell Ionization Cross Sections by Electron Impact |
TANG Chang-Huan1,2;AN Zhu2;FAN Xiao-Qiang3;LUO Zheng-Ming2 |
1Laser Fusion Research Center, CAEP, Mianyang 621900
2Institute of Nuclear Science and Technology, Sichuan University, Key Laboratory for Radiation Physics and Technology of Education Ministry of China, Chengdu 610064
3Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900 |
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Cite this article: |
TANG Chang-Huan, AN Zhu, FAN Xiao-Qiang et al 2001 Chin. Phys. Lett. 18 1053-1055 |
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Abstract An empirical formula is proposed to describe the K-shell
ionization cross sections by electron impact over a wide range of atomic numbers and overvoltages U (the ratio between the electron incident energy and the binding energy of the electrons in the K-shell). The study is based on the analysis of existing experimental data of K-shell ionization cross sections. The expression shows the results in good agreement with the data for Z < 6 atoms as well as for 6 ≤ Z ≤ 79.
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Keywords:
34.80.Dp
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Published: 01 August 2001
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PACS: |
34.80.Dp
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(Atomic excitation and ionization)
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Abstract
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