Relativistic R-matrix calculations for L-shell photoionization cross sections of C Ⅱ

doi:10.1088/1674-1056/27/8/083201

Abstract The photoionization cross section of the ground state 2s²2p 2P_1/2^o and the first excited state 2s²2p 2P_3/2^o 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.

Keywords: photoionization cross section relativistic R-matrix method C Ⅱ

Received: 30 March 2018
Revised: 17 May 2018
Accepted manuscript online:

PACS:	32.80.-t	(Photoionization and excitation)
	31.15.am	(Relativistic configuration interaction (CI) and many-body perturbation calculations)

Fund: 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), and the Young Teachers Scientific Research Ability Promotion Plan of Northwest Normal University (Grant No. NWNU-LKQN-15-3).

Corresponding Authors: Lu-You Xie
E-mail: xiely@nwnu.edu.cn

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Lu-You Xie(颉录有), Qian-Qian Man(满倩倩), Jian-Guo Wang(王建国), Yi-Zhi Qu(屈一至), Chen-Zhong Dong(董晨钟) Relativistic R-matrix calculations for L-shell photoionization cross sections of C Ⅱ 2018 Chin. Phys. B 27 083201

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Relativistic R-matrix calculations for L-shell photoionization cross sections of C Ⅱ

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