We numerically describe the ionization process induced by linearly and circularly polarized extreme ultraviolet (XUV) attosecond laser pulses on an aligned atomic target, specifically the excited state Ne*(1s ²2s ²2p ⁵[]3s[]). We compute the excited atomic state by applying the time-dependent restricted-active-space self-consistent field method to fully account for the electronic correlation. We find that correlation-assisted ionization channels can dominate channels accessible without correlation. We also observe that the rotation of the photoelectron momentum distribution by circularly polarized laser pulses compared to the case of linear polarization can be explained in terms of differences in accessible ionization channels. This study shows that it is essential to include electron correlation effects to obtain an accurate description of the photoelectron emission dynamics from aligned excited states.

我们数值描述了由线性和圆偏振极紫外 (XUV) 阿秒激光脉冲在对齐的原子目标上引起的电离过程，特别是激发态 Ne*(1 s ² 2 s ² 2 p ⁵ [ ]3 s [ ]]）。我们通过应用时间相关的受限活性空间自洽场方法来计算激发原子态，以充分考虑电子相关性。我们发现相关辅助电离通道可以在没有相关性的情况下主导通道。我们还观察到，与线性偏振的情况相比，圆偏振激光脉冲对光电子动量分布的旋转可以用可接近的电离通道的差异来解释。这项研究表明，必须包括电子相关效应才能准确描述对齐激发态的光电子发射动力学。