Electron correlations in cross sections for ionization of heliumlike ions by high-energy particle impact

被引：2
|
作者：
Mikhailov, A. I. [1 ,2 ]
Nefiodov, A. V. [1 ,2 ]
Plunien, G. [3 ]
机构：
[1] Petersburg Nucl Phys Inst, St Petersburg 188300, Russia
[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[3] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 03期
关键词：
K-SHELL; PERTURBATION-THEORY; ELEMENTS HYDROGEN; SINGLE IONIZATION; ATOMS; COLLISIONS; ABSOLUTE; BEAM; LI+;
D O I：
10.1103/PhysRevA.87.032705
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have evaluated the dominant contribution of the electron correlations to the single K-shell ionization cross section of heliumlike atomic systems by impact of high-energy electrons. This study is performed consistently within the framework of nonrelativistic perturbation theory. The results obtained are also applicable for the case of high-energy collisions with arbitrary charged particles whose mass is much less than that of the target. The formula for cross section is represented in the form of a universal scaling. A comparison of our numerical calculations with available experimental data is made. DOI: 10.1103/PhysRevA.87.032705
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页数：10
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