| 原子(离子)光电离过程中多级效应的理论研究 |
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| 引用本文： | 刘晓斌,董晨钟,邢永忠.原子(离子)光电离过程中多级效应的理论研究[J].原子与分子物理学报,2007,24(5):987-991. |
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| 作者姓名： | 刘晓斌 董晨钟 邢永忠 |
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| 作者单位： | 1. 天水师范学院数理与信息科学学院,天水,741000
2. 西北师范大学物理与电子工程学院,兰州,730070 |
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| 摘 要： | 在相对论理论框架下,通过对氢及类氢离子光电离截面的理论研究,探讨了多极效应的变化规律和电偶极跃迁的适用范围.结果表明:光电离过程中的多极效应与入射光子的能量、电子离核的平均半径等密切相关.入射光子的能量对多极效应的影响在通常情况下更具普遍意义,当其能量较大时,光电离截面的理论计算必须考虑多极效应.
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| 关 键 词： | 多极效应 比值 光电离截面 相对论理论 |
| 文章编号： | 1000-0364（2007）05-0987-05 |
| 收稿时间： | 3/2/2006 12:00:00 AM |
| 修稿时间： | 2006-03-02 |
Theoretical study on multipole effect of atomic photoionization processes |
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| LIU Xiao-bin,DONG Chen-zhong,XING Yong-zhong.Theoretical study on multipole effect of atomic photoionization processes[J].Journal of Atomic and Molecular Physics,2007,24(5):987-991. |
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| Authors: | LIU Xiao-bin DONG Chen-zhong XING Yong-zhong |
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| Institution: | 1. School of Mathematics and Physics and Information Science, Tianshui Normal University, Tianshui 741000, China; 2. College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China |
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| Abstract: | Based on relativistic method, the multipole effect on photoionization of single-electron systems have been calculated systemically. Our calculated results indicate that the main factors what influence multipole effect are photon energy, average electronic radius, atomic number Z and so on. And the theoretical explain of relative ratio variation of multipole expansion and dipole approximation for photoionization cross section are given. |
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| Keywords: | multipole effect relative ratio photoionization cross section relativistic method |
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