A recent experiment (Villeneuve et al 2017 Science 356 1150) has shown that two-color photoionization of neon by the combination of an attosecond XUV pulse train and a moderately strong, linearly polarized IR pulse can preferentially produce photoelectrons with orbital angular quantum number l = 3 (f-wave) and magnetic quantum number m = 0. This result was rationalized by the occurrence of different Stark shifts of m = 0 and | m | = 1 sub-levels in the IR laser field. Here we perform 3D time-dependent Schrödinger equation calculations with a neon effective potential to identify the mechanism for the selective excitation and ionization of m = 0 sub-levels. Calculations of the ionization and excitation yields as a function of the IR intensity and the XUV and IR photon energy reveal that a coupling between two dominant ionization channels involving 3p and 3d intermediate excitations is responsible for the observed m -level...

中文翻译：

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使用XUV-IR双色激光场选择氖共振电离中的磁量子数

最近的一项实验（Villeneuve等人2017 Science 356 1150）表明，通过将阿秒XUV脉冲序列和中等强度的线性偏振IR脉冲结合使用，可以对氖进行双色电离，可以优先产生轨道角量子数为l =的光电子。 3（f波）且磁量子数m =0。通过出现m = 0和||的不同斯塔克位移，可以使该结果合理化。米| 红外激光场中= 1个子级别。在这里，我们以霓虹有效电势执行3D时间相关的Schrödinger方程计算，以确定m = 0子水平的选择性激发和电离的机制。