论文标题
强场挫败了氩原子的双电离
Strong field frustrated double ionization of argon atoms
论文作者
论文摘要
使用三维半经典方法，我们从理论上研究了受强激光场的AR原子的沮丧双电离（FDI）。在最近的实验中观察到的FDI产生的双驼峰光电子动量分布[S. Larimian等人，物理。 Rev. Research 2，013021（2020）]由我们的模拟复制。我们确认观察到的频谱是由于回忆。研究了FDI的激光强度依赖性。我们透露，AR+的AR原子和激发态的双重激发态分别是在相对较低和高强度下产生FDI的主要途径。我们的工作表明，在适度的强度下，外国直接投资是一个一般的强场物理过程，伴随着非序列的双电离，这是回忆的重要结果。
Using a three-dimensional semiclassical method, we theoretically investigate frustrated double ionization (FDI) of Ar atoms subjected to strong laser fields. The double-hump photoelectron momentum distribution generated from FDI observed in a recent experiment [S. Larimian et al., Phys. Rev. Research 2, 013021 (2020)] is reproduced by our simulation. We confirm that the observed spectrum is due to recollision. The laser intensity dependence of FDI is investigated. We reveal that the doubly excited states of Ar atoms and excited states of Ar+ are the dominant pathways for producing FDI at relatively low and high intensities, respectively. Our work demonstrates that at modest intensities, FDI is a general strong-field physical process accompanied with nonsequential double ionization and it is an important consequence of recollision.
