| Bi80+辐射复合过程的计算 |
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| 引用本文： | 曾思良,逄锦桥,李 萍,李月明,颜 君,王建国. Bi80+辐射复合过程的计算[J]. 物理学报, 2005, 54(6): 2625-2632 |
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| 作者姓名： | 曾思良 逄锦桥 李 萍 李月明 颜 君 王建国 |
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| 作者单位： | 北京应用物理与计算数学研究所计算物理重点实验室，北京 100080 |
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| 基金项目： | 国家自然科学基金(批准号：10344001和10174009)资助的课题. |
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| 摘 要： | 基于Dirac-Slater自洽场方法，计算了Bi79+离子从低能到高能的光电离截面以及其逆过程Bi80+的辐射复合截面; 分析了Kramers公式的适用性；考察了多极效应 、相对论效应在不同能区对辐射复合截面的影响；计算了Bi80+离子在电离阈值附近 的辐射 复合截面和辐射复合速率系数，考察了自由电子分布函数及电子的温度变化对速率系数的影 响，并将计算结果同高精度的储存环合并束实验进行了对比.关键词：多极计算辐射复合光电离
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| 关 键 词： | 多极计算 辐射复合 光电离 |
| 文章编号： | 1000-3290/2005/54(06)2625-08 |
| 收稿时间： | 2004-07-29 |
Radiative recombination processes of Bi80+ |
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| Zeng Si-Liang,Pang Jin-Qiao,Li Ping,Li Yue-Ming,Yan Jun and Wang Jian-Guo. Radiative recombination processes of Bi80+[J]. Acta Physica Sinica, 2005, 54(6): 2625-2632 |
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| Authors: | Zeng Si-Liang Pang Jin-Qiao Li Ping Li Yue-Ming Yan Jun Wang Jian-Guo |
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| Abstract: | The Dirac_Slater method is used to calculate the photoionization cross sections of Bi79+ from low to high energy. The numerical results are compared with those calculated by the quasi_classical Kramers formula, and the validity of Kra mers formula is analyzed. The relativistic effects and multipole contributions o f the photoionization processes are also discussed. For the comparison with the merged_beam rate coefficients, the theoretical rate coefficients were evaluated with the experimental electron_velocity distribution function(characterized by t he temperatures) parallel and perpendicular to the electron_beam direction. Thou gh the effects of relativity are considered in the present work, the measured ra te coefficients exceed our results in the energy range close to the threshold. |
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| Keywords: | multipole calculation radiative recombination photoionization |
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