| 锂原子光电离截面的无穷阶计算 |
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| 引用本文： | 马晓光.锂原子光电离截面的无穷阶计算[J].原子与分子物理学报,2009,26(1):34-38. |
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| 作者姓名： | 马晓光 |
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| 作者单位： | 鲁东大学物理系,烟台,264025 |
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| 基金项目： | 鲁东大学博士启动基金，鲁东大学重点科研项目 |
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| 摘 要： | 利用多体微扰理论，把基态锂原子K和L壳层电子的光电离过程中的电子相关效应计算到了无穷阶。用Feynman图技术讨论了基态关联效应和混相近似效应，并计算了与无穷阶末态关联的耦合效应。计算结果与实验和其他理论结果吻合得很好。
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| 关 键 词： | 光电离 多体微扰理论 锂原子 耦合方程方法 |
| 修稿时间： | 5/6/2008 12:00:00 AM |
The infinite-order calculations for the photoionization cross sections of lithium above thresholds |
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| Ma Xiaoguang.The infinite-order calculations for the photoionization cross sections of lithium above thresholds[J].Journal of Atomic and Molecular Physics,2009,26(1):34-38. |
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| Authors: | Ma Xiaoguang |
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| Institution: | Department of Physics, Ludong University |
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| Abstract: | Using many-body perturbation theory (MBPT), the infinite-order
perturbation calculations have been performed for the
photoionization cross sections of the K and L shells in the ground
state $1s^22s{\ }^2S$ of the neutral lithium above the Li$^+{}1s2s{\ }^3S$, Li$^+{\ }1s^2{\ }^1S$ thresholds respectively. The
ground-state and random-phase approximation correlations coupled
with infinite-order final-state correlations have been discussed
by Feynman diagrams in detail. Comparison is made with other
theoretical calculations and recent experimental results for the
pure single photoionization of the K and L shells respectively.
Very good agreement with experimental results has been obtained. |
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| Keywords: | photoionization MBPT Lithium CEM |
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