Relativistic R-matrix calculations for L-shell photoionization cross sections of C II<xref rid="cpb_27_8_083201fn1" ref-type="fn">*</xref><fn id="cpb_27_8_083201fn1"><label>*</label>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).</fn>

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

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).

Xie Lu-You^{1, †}, Man Qian-Qian¹, Wang Jian-Guo², Qu Yi-Zhi³, Dong Chen-Zhong¹

(color online) Photoionization cross sections of CII from the photon energy region 24 eV–31 eV. (a) Nonrelativistic R-Matrix results for ground term 2s²2p(²P^o) in LS coupling by Nahar;^[16] (b) DARC results for fine structure levels of the ground state 2s²2p (solid curve) and the first excited state (dashed curve); (c) present theoretical data convolved with a Gaussian FWHM of 35 meV; (d) experimentally measured cross sections by Kjeldsen et al.^[21,22] The unit 1 barn = 10⁻²⁴ cm².