摘要
The photoionization cross section of the ground state 2s22p 2Po1/2 and the first excited state 2s22p2po1/2 of C II ions are systematically calculated using the fully relativistic R-matrix code DARC. The detailed resonances are presented and identified for the photon energy ranging from threshold （24.38 eV） up to 41.5 eV where the L-shell （2p, 2s） photoionization process is dominant. In the calculations, the relativistic effect and electronic correlation effect are well considered. It is found that the relativistic effect is very important for the light atomic system CII, which accounts for experimentally observed fine structure resonance peaks. A careful comparison is made between the present results and the experimental values, and also other theoretical data available in the literature, showing that good agreement is obtained for the resonance peaks.
The photoionization cross section of the ground state 2s22p 2Po1/2 and the first excited state 2s22p2po1/2 of C II ions are systematically calculated using the fully relativistic R-matrix code DARC. The detailed resonances are presented and identified for the photon energy ranging from threshold （24.38 eV） up to 41.5 eV where the L-shell （2p, 2s） photoionization process is dominant. In the calculations, the relativistic effect and electronic correlation effect are well considered. It is found that the relativistic effect is very important for the light atomic system CII, which accounts for experimentally observed fine structure resonance peaks. A careful comparison is made between the present results and the experimental values, and also other theoretical data available in the literature, showing that good agreement is obtained for the resonance peaks.
作者
Lu-You Xie
Qian-Qian Man
Jian-Guo Wang
Yi-Zhi Qu
Chen-Zhong Dong
颉录有;满倩倩;王建国;屈一至;董晨钟(Key Laboratory of Atomic and Molecular Physics ＆ Functional Materials of Gansu Province,College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China;Key Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088,China;College of Material Sciences and Opto-electronic Technology,University of the Chinese Academy of Sciences,Beijing 100049,China)
基金
Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0402300)
the National Natural Science Foundation of China(Grant Nos.U1530142,11474032,and 11774344)
the Young Teachers Scientific Research Ability Promotion Plan of Northwest Normal University(Grant No.NWNU-LKQN-15-3)
