Theoretical analysis of angular correlation between the photoelectron and subsequent polarized fluorescent photon in atomic photoionization
Theoretical analysis of angular correlation between the photoelectron and subsequent polarized fluorescent photon in atomic photoionization
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原子光电离中光电子与随后的偏振荧光光子之间角度相关性的理论分析
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
K. Ueda
中科院分区：
文献类型：
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作者：
N. Kabachnik;K. Ueda
本文从理论上分析了原子光电离过程中，光电子与随后的偏振荧光辐射之间的角关联。利用密度矩阵和统计张量形式，得到了任意偏振入射光子束的关联函数的一般表达式。最近实验的特定几何形状（Beyer等人，1995）被认为是决定角相关的参数表示的光电离振幅。结果表明，光电子（偏振）荧光符合测量显示出较强的圆二色性和线二色性。作为一个例子，在多通道量子亏损理论的框架内计算了Ca原子在4p ~ 2 P ~（3/2）阈值附近的光电离。
The angular correlation between the photoelectron and subsequent polarized fluorescent radiation measured in coincidence is analysed theoretically for atomic photoionization. Using the density matrix and statistical tensor formalism the general expression for the correlation function is obtained for an arbitrary polarized incident photon beam. The particular geometry of a recent experiment (Beyer et al., 1995) is considered and the parameters which determine the angular correlation are expressed in terms of photoionization amplitudes. It is demonstrated that the photoelectron- (polarized) fluorescence coincidence measurements reveal strong circular and linear dichroism. As an example the photoionization of Ca atoms near the 4p 2P3/2 threshold is calculated within the framework of multichannel quantum defect theory.