论文标题
手性光电子角分布来自阿克原子和分子物种的电离
Chiral photoelectron angular distributions from ionization of achiral atomic and molecular species
论文作者
论文摘要
我们表明，两个Achiral成分的组合 - 原子或分子靶标以及一个圆极化的光子 - 可以产生精神结构的光电子角度分布。对于CO的光离子，当分子轴既不垂直也不是（抗）与光传播轴平行时，碳K-shell光电子的角度分布是手性的。在HE的照片双离子化中，一个电子的分布是手性的，如果另一个电子在前一种情况下像分子轴一样定向，以及电子是否可以通过其能量区分。在这两种情况下，圆两极化的光子都定义了具有旋转感的平面，并且由CO分子或一个电子定义了额外的轴。这足以建立一个明确的坐标框架。要产生手性结构化的电子角分布，这种坐标框是必要的，但不够。我们表明，需要其他电子电子相互作用或散射过程来创建手性角分布。
We show that the combination of two achiral components - atomic or molecular target plus a circularly polarized photon - can yield chirally structured photoelectron angular distributions. For photoionization of CO, the angular distribution of carbon K-shell photoelectrons is chiral when the molecular axis is neither perpendicular nor (anti-)parallel to the light propagation axis. In photo-double-ionization of He, the distribution of one electron is chiral, if the other electron is oriented like the molecular axis in the former case and if the electrons are distinguishable by their energy. In both scenarios, the circularly polarized photon defines a plane with a sense of rotation and an additional axis is defined by the CO molecule or one electron. This is sufficient to establish an unambiguous coordinate frame of well-defined handedness. To produce a chirally structured electron angular distribution, such a coordinate frame is necessary, but not sufficient. We show that additional electron-electron interaction or scattering processes are needed to create the chiral angular distribution.
