论文标题
强场电离中以库仑为中心电子的手性敏感性增强
Enhanced chiral-sensitivity of Coulomb-focused electrons in strong field ionization
论文作者
论文摘要
强场光 - 物质相互作用引发了广泛的现象，在这些现象中，可以通过调整激光场来操纵电子波袋的定量。在通过原子和分子靶标的强激光脉冲释放的电子中，有些是通过振荡激光场驱动到离子芯附近的。这些返回电源的轨迹通过离子电位（一种称为库仑聚焦的效果）倾向于核心。在过去的二十年中，这一过程与库仑电位的远距离影响有关。在这里，我们探讨了库仑聚焦的苯梅农的结构特性。具体而言，我们从数值上研究了返回电子动力学的灵敏度，其离子电位的各向异性。我们采用正交极化的两色强场和手性分子，它们的不对称特征导致电势的明确指纹The Freed Electron。以库仑为中心的电子显示出对手性的敏感性，这与因野外辅助散射电子散射到手性离子电位上的不对称toctoclock样角条纹。离子电势的各向异性特征因此，在其返回路径中以库仑为中心电子的运动，使莱顿相互作用的结构特性。
Strong-field light-matter interactions initiate a wide range of phenomena in which the quantumpaths of electronic wavepackets can be manipulated by tailoring the laser field. Among the electronsreleased by a strong laser pulse from atomic and molecular targets, some are subsequently drivenback to the vicinity of the ionic core by the oscillating laser field. The trajectories of these returningelectrons are bent towards the core by the ionic potential, an effect known as Coulomb focusing.This process, studied over the past two decades, has been associated with the long range influenceof the Coulomb potential. Here we explore the structural properties of the Coulomb focusingphenomenon. Specifically, we numerically study the sensitivity of the returning electron dynamicsto the anisotropy of the ionic potential. We employ orthogonally polarized two-color strong fieldsand chiral molecules, whose asymmetric features lead to unambiguous fingerprints of the potentialon the freed electrons. The Coulomb-focused electrons show an enhanced sensitivity to chirality,related to an asymmetric attoclock-like angular streaking stemming from field-assisted scatteringof the electrons onto the chiral ionic potential. Anisotropic features of the ionic potential thusmonitor the motion of Coulomb-focused electrons throughout their returning paths, shedding lighton the structural properties of the interaction.
