Correlated radiative capture of two electrons with formation of heliumlike ion in the 1s2s 1S state

被引：14

作者：

Nefiodov, A

Mikhailov, AI

Plunien, G

机构：

[1] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany

[2] Petersburg Nucl Phys Inst, St Petersburg 188300, Russia

[3] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICS LETTERS A | 2005年 / 346卷 / 1-3期

关键词：

D O I：

10.1016/j.physleta.2005.07.082

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the correlated double-electron capture by a bare nucleus followed by the emission of a single photon and the formation of heliumlike ion in the excited 2(1)S state. The total cross section of the process is calculated taking into account the leading orders of QED perturbation theory. The present evaluation is focused on the domain of collision energies, which allows for the dipole approximation in treatment of the electron-photon interaction. The universal scaling is found for the ratio of cross sections for capture into the 2(1)S and 1(1)S states. In the low-energy regime, the probability for the population of excited states is shown to exceed significantly that of the ground state. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：158 / 162

页数：5

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