Absolute Cross Sections for Near-Threshold Electron-Impact Excitation of the 2s S-2 -> 2p P-2 Transition of Li-Like C3+, N4+, and O5+ Ions

作者：Yang Ning-Xuan^*; Zhang Jian-Jun; Dong Chen-Zhong

来源：Chinese Physics Letters, 2014, 31(8): 083401.

DOI：10.1088/0256-307X/31/8/083401

• 2S-2P EXCITATION
• C-IV
• STATES

Excitation cross sections of 1s(2)2s(2)S(1/2) -> 1s(2)2p(2)P(1/2),(3/2) transition among the fine-structure levels in Li-like C3+, N4+, and O5+ ions are calculated for energies of the near-threshold by using the relativistic distorted-wave program REIE06. The target state wavefunctions are calculated by using the Grasp92 code. The continuum orbitals are studied in the distorted-wave approximation, in which the direct and exchange potentials among all the electrons are included. The results of the Li-like C3+ ion settle the discrepancy between several previous experiments by using the crossed-beams fluorescence method, in good agreement with the measurements of Savin et al. Moreover, the results in Li-like N4+, and O5+ ions are compared with the previous experiments, and a good agreement is obtained.

• 出版日期2014-8
• 单位西北师范大学; 石河子大学