Energy Dependency of Proton-Induced Outer-Shell Multiple Ionization for 48Cd and 49In

IF 1.1 4区物理与天体物理 Q4 PHYSICS, APPLIED

Laser and Particle Beams Pub Date : 2021-01-20 DOI:10.1155/2021/6653739

Xianming Zhou, Jing Wei, R. Cheng, Yanhong Chen, Yong-tao Zhao, Xiao’an Zhang

引用次数: 0

Abstract

L subshell X-rays of 48Cd and 49In have been measured for the impact of protons with energies from 75 to 250 keV. Obviously, it is found that Lγ2 (abbreviation Lγ2,3 for 48Cd and Lγ2,3,4 for 49In) X-ray emission is enhanced in comparison with Lγ1 X-ray emission. The relative intensity ratios of Lγ2 to Lγ1 X-ray are larger than the atomic data and increase with decreasing proton energy. This is caused by the multiple ionization of outer-shell electrons. To verify this explanation, the enhancements for relative intensity ratio of Lι and Lβ2 to Lα X-ray in experiments are discussed, and the direct ionization cross sections of 4d, 5s, and 5p electrons are calculated using BEA theory.

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质子诱导48Cd和49In外层多重电离的能量依赖性

已经测量了48Cd和49In的L亚壳x射线对能量在75到250 keV之间的质子的影响。与l - γ - 1相比，l - γ - 2 (48Cd缩写为l - γ2,3, 49In缩写为l - γ2,3,4)的x射线发射明显增强。l - γ - 2与l - γ - 1 x射线的相对强度比大于原子数据，并随着质子能量的减小而增大。这是由外层电子的多重电离引起的。为了验证这一解释，讨论了实验中l_1和Lβ2相对于Lα x射线的相对强度比的增强，并利用BEA理论计算了4d、5s和5p电子的直接电离截面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Laser and Particle Beams PHYSICS, APPLIED-

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

1 months

期刊介绍： Laser and Particle Beams is an international journal which deals with basic physics issues of intense laser and particle beams, and the interaction of these beams with matter. Research on pulse power technology associated with beam generation is also of strong interest. Subjects covered include the physics of high energy densities; non-LTE phenomena; hot dense matter and related atomic, plasma and hydrodynamic physics and astrophysics; intense sources of coherent radiation; high current particle accelerators; beam-wave interaction; and pulsed power technology.