Absolute Cross Sections for Near-Threshold Electron-Impact Excitation of the 2s^2S→2p^2P Transition of Li-Like C^3+, N^4+, and O^5+ Ions |
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引用本文: | 杨宁选,;张建军,;董晨钟.Absolute Cross Sections for Near-Threshold Electron-Impact Excitation of the 2s^2S→2p^2P Transition of Li-Like C^3+, N^4+, and O^5+ Ions[J].中国物理快报,2014(8):49-52. |
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作者姓名: | 杨宁选 ;张建军 ;董晨钟 |
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作者单位: | [1]KeyLaboratoryofEcophysicsandDepartmentofPhysics,CollegeofScience,ShiheziUniversity,Shihezi832000; [2]CollegeofPhysicsandElectronicEngineering,NorthwestNormalUniversity,Lanzhou730070 |
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基金项目: | Supported by the Science and Technology Talent Cultivate Project of Excellent Youth Program in Shihezi University under Grant No 2013ZRKXYQ09. |
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摘 要: | Excitation cross sections of 1s^22s ^2S1/2 → 1s^22p^2p1/2,3/2 transition among the fine-structure levels in Li-like C^3+, N^4+, and O^5+ 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 C^3+ 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 N^4+, and O^5+ ions are compared with the previous experiments, and a good agreement is obtained.
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关 键 词: | 电子碰撞激发 离子 阈值 横截面 激发截面 细微结构 目标状态 相对论 |
Absolute Cross Sections for Near-Threshold Electron-Impact Excitation of the 2s^2S→2p^2P Transition of Li-Like C^3+, N^4+, and O^5+ Ions |
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Institution: | YANG Ning-Xuan, ZHANG Jian-Jun, DONG Chen-Zhong(1Key Laboratory of Ecophysics and Department of Physics, College of Science, Shihezi University, Shihezi 832000 2 College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070) |
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