Theoretical Investigation of Electron–Ion Recombination Process of Mg-like Gold

Author:

Xie Luyou1ORCID,He Wenliang1,Niu Shengbo1,Rui Jinglin1,Ma Yulong1,Dong Chenzhong1

Affiliation:

1. Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China

Abstract

The L-shell dielectronic and trielectronic recombinations of highly charged Mg-like gold ions (Au67+) in the ground state 2s22p63s2 1S0 have been studied systematically. The recombination cross-sections and rate coefficients are carefully calculated for ∆n = 1 (2s/2p → 3l) transitions using a flexible atomic code based on the relativistic configuration interaction method and considering the Breit and QED corrections. Detailed resonance energies and resonance strengths are presented for the stronger resonances of the LMn (n = 3–12) series. It is found that the contributions of the trielectronic recombination to the total cross-section is about 13.75%, which cannot be neglected. For convenience of application, the plasma rate coefficients are also calculated and fitted to a semiempirical formula, and in the calculations, the contributions from the higher excited resonance groups n ≥ 13 are evaluated by an extrapolation method, which is about 2.93% of the total rate coefficient.

Funder

National Key Research and Development Program of China

Natural Science Foundation of China

Innovative Fundamental Research Group Project of Gansu Province

doctoral research fund of Lanzhou City University

Publisher

MDPI AG

Subject

Condensed Matter Physics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

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