多通道光离化的光电子干涉效应及空间角分布

Space Angular Distribution and Interference Pattern of Photoelectrons by Multi-passage Ionization

利用光电子角分布成像光谱技术原理,以钠原子为例利用双光子共振三光子电离方法研究了从钠原子的4D态双能级电离后所产生的光电子角分布的状态.分析、讨论了多通道电离过程中所产生光电子的干涉效应.分析了光电子的空间角分布各部分的物理意义.结果表明该干涉图谱能够清楚地描绘出光电子能量和空间角分布状态.

Based on the principle of the photoelectron imaging spectrometry, taking sodium atoms as an example,the characters of the photoelectrons angular distribution and the interference effect , which are produced from double-level of the D state of the atomic sodium, are investigated analytically by using the two-photon resonance and three-photon ionization. The energy and the space angular distribution of the photoelectrons are described expressly by the photoelectron imaging. The result for the analysis the photoelectrons angular distribution possesses significances.