1College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070
2National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000
3School of Medicine, Kitasato University, 1-15-1 Kitasato, Sagamihra, Kanagawa 228-855, Japan
Theoretical Investigation of Decay Process in a Doubly Excited 2s21S0 State of He-Like Ions
1College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070
2National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000
3School of Medicine, Kitasato University, 1-15-1 Kitasato, Sagamihra, Kanagawa 228-855, Japan
Abstract： In the framework of multi-configuration Dirac--Fock theory, a detailed calculation is performed for the decay rates and the energies of the doubly excited 2s21S0 state of He-like ions, of which atomic number Z ranges from 6 to 92. The 2s21S0-1s 2S1/2 Auger decay is predominant at low Z regime, whereas the 2s21S0-1s2p 1,3P1 two-electron one-photon transitions become quite important in moderate and high Z regimes. For heavy ions with Z≥72, the contribution of 2s21S0-1s2s 3S1 M1 transition is significant. The Breit interaction considerably enhances the 2s21S0-1s 22S1/2 Auger rate at high Z regime.
ZHANG Deng-Hong;DONG Chen-Zhong;Fumihiro Koike. Theoretical Investigation of Decay Process in a Doubly Excited 2s21S0 State of He-Like Ions[J]. 中国物理快报, 2006, 23(8): 2059-2062.
ZHANG Deng-Hong, DONG Chen-Zhong, Fumihiro Koike. Theoretical Investigation of Decay Process in a Doubly Excited 2s21S0 State of He-Like Ions. Chin. Phys. Lett., 2006, 23(8): 2059-2062.
2006, Vol. 23 
