An Empirical Formula of Atomic K-Shell Ionization Cross Sections by Electron Impact

Chin. Phys. Lett.

2001, Vol. 18

Issue (8): 1053-1055 DOI:

Original Articles

An Empirical Formula of Atomic K-Shell Ionization Cross Sections by Electron Impact

TANG Chang-Huan^1,2;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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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.

Keywords: 34.80.Dp

Published: 01 August 2001

PACS:

34.80.Dp

(Atomic excitation and ionization)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I8/01053

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