Excitation and decay dynamics of 1s2s inner-shell double-vacancy states of neon atoms  

作　　者：丁晓彬 董晨钟 Fumihiro Koike Takako Kato Stephan Fritzsche 

机构地区：[1]College of Physics and Electronic Engineering,Northwest Normal University [2]Center of Theoretical Nuclear Physics,National laboratory of Heavy-Ion Accelerator of Lanzhou [3]Physics Department,School of Medicine,Kitasato University,1-15-1 Kitasato,228-8555,Japan [4]National Institute for Fusion Science [5]Department of Physics,University of Kassel,Heinrich-Plett-Straβe 40,D-34132,Kassel,Germany

出　　处：《Chinese Physics B》2008年第2期592-598,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos 10434100,10774122);the Core-University Program between Japanese Society of Promotion of Science and Chinese Academy of Sciences;the Foundation of Center of Theoretical Nuclear Physics of National Laboratory of Heavy Ion Accelerator of Lanzhou;the Foundation of Northwest Normal University (Grant No NWNU-KJCXGC-03-21)

摘　　要：The photo-excitation and Auger decay processes of inner-shell double vacancy states 1s2s2p^6（1,3^S）3s3p of neutral neon atoms have been studied theoretically. Multi-configuration Dirac-Fock （MCDF） calculations have been carried out, with electron correlation effects taken into consideration. The relaxation of core and excited orbitals and configuration interaction are found to be crucial to creating the double vacancy states by single photo-absorption. The predominant decay paths for the double vacancy states turn out to be of the LLM Auger decay to 1s 2s^22p^53s（3p）, KLL Auger decay to 1s^22s2p^43s3p, and KLM Auger decay to 1s^22p^63s（3p）. They lead to further Auger decay, creating the neon ions of multiple charge states. For both double and single vacancy states the spectator type of Auger process is dominated in all the Auger decay processes. Theoretical Anger electron spectra are presented for further investigations, experimental and theoretical.The photo-excitation and Auger decay processes of inner-shell double vacancy states 1s2s2p^6（1,3^S）3s3p of neutral neon atoms have been studied theoretically. Multi-configuration Dirac-Fock （MCDF） calculations have been carried out, with electron correlation effects taken into consideration. The relaxation of core and excited orbitals and configuration interaction are found to be crucial to creating the double vacancy states by single photo-absorption. The predominant decay paths for the double vacancy states turn out to be of the LLM Auger decay to 1s 2s^22p^53s（3p）, KLL Auger decay to 1s^22s2p^43s3p, and KLM Auger decay to 1s^22p^63s（3p）. They lead to further Auger decay, creating the neon ions of multiple charge states. For both double and single vacancy states the spectator type of Auger process is dominated in all the Auger decay processes. Theoretical Anger electron spectra are presented for further investigations, experimental and theoretical.

关 键 词：correlation effects multi-configuration Dirac-Fock （MCDF） method Auger decay 

分 类 号：O562[理学—原子与分子物理]