中国物理B ›› 2008, Vol. 17 ›› Issue (9): 3294-3299.doi: 10.1088/1674-1056/17/9/025

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Two-electron and one-photon transitions in highly charged nickel-like ions

颉录有1, 蒋军1, 万建杰1, 董晨钟2, 颜君3   

  1. (1)College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China; (2)College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China;National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000, China; (3)Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2007-11-07 修回日期:2008-02-26 出版日期:2008-09-08 发布日期:2008-09-08
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10434100 and 10774122), the Foundation of China/Ireland Science and Technology Collaboration Research (Grant No CI-2004-07), the Foundation of the Center of Theoretical Nucle

Two-electron and one-photon transitions in highly charged nickel-like ions

Xie Lu-You(颉录有)a), Dong Chen-Zhong(董晨钟)a)b)†, Jiang Jun(蒋军)a), Wan Jian-Jie(万建杰)a), and Yan Jun(颜君)c)   

  1. a College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China; b National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000, China; c Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2007-11-07 Revised:2008-02-26 Online:2008-09-08 Published:2008-09-08
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10434100 and 10774122), the Foundation of China/Ireland Science and Technology Collaboration Research (Grant No CI-2004-07), the Foundation of the Center of Theoretical Nucle

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摘要： This paper calculates the transition wavelengths and probabilities of the two-electron and one-photon (TEOP) transition from the $(3{\rm s}^{-1}_{1/2}4{\rm d}_{j})_{J=1,2}$ to $(3{\rm p}^{-1}_{3/2}4{\rm s}_{1/2})_{J=1}$ and the $(3{\rm p}^{-1}_{1/2}4{\rm s}_{1/2})_{J=1}$ to $(3{\rm d}^{-1}_{j}4{\rm d}_{j'})_{J=1,2}$ for highly charged Ni-like ions with atomic number $Z$ in the range $47\leq Z\leq92$. In the calculations, the multi-configuration Dirac--Fock method and corresponding program packages GRASP92 and REOS99 were used, and the relativistic effects, correlation effects and relaxation effects were considered systematically. It is found that the TEOP transitions are very sensitive to the correlation of electrons, and the probabilities will be enhanced sharply in some special $Z$ regions along the isoelectronic sequence. The present TEOP transition wavelengths are compared with the available data from some previous publications, good agreement is obtained.

关键词: multiconfiguration Dirac--Fock method, two-electron and one-photon transition, strong configuration mixing

Abstract: This paper calculates the transition wavelengths and probabilities of the two-electron and one-photon (TEOP) transition from the $(3{\rm s}^{-1}_{1/2}4{\rm d}_{j})_{J=1,2}$ to $(3{\rm p}^{-1}_{3/2}4{\rm s}_{1/2})_{J=1}$ and the $(3{\rm p}^{-1}_{1/2}4{\rm s}_{1/2})_{J=1}$ to $(3{\rm d}^{-1}_{j}4{\rm d}_{j'})_{J=1,2}$ for highly charged Ni-like ions with atomic number $Z$ in the range $47\leq Z\leq92$. In the calculations, the multi-configuration Dirac--Fock method and corresponding program packages GRASP92 and REOS99 were used, and the relativistic effects, correlation effects and relaxation effects were considered systematically. It is found that the TEOP transitions are very sensitive to the correlation of electrons, and the probabilities will be enhanced sharply in some special $Z$ regions along the isoelectronic sequence. The present TEOP transition wavelengths are compared with the available data from some previous publications, good agreement is obtained.

Key words: multiconfiguration Dirac--Fock method, two-electron and one-photon transition, strong configuration mixing

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
31.15.vj (Electron correlation calculations for atoms and ions: excited states) 31.15.xr (Self-consistent-field methods) 32.70.Cs (Oscillator strengths, lifetimes, transition moments)