Laser电离电子二维动量分布中的Ramsauer-Townsend衍射振荡
Ramsauer-Townsend Diffraction Oscillations in the Two-Dimensional Momentum Distribution of Laser-Ionized electrons
摘要：
通过求解含时薛定谔方程和经典轨道蒙特卡罗模拟（CTMC-T），分析了在多光子吸收到隧穿跃迁过程中，几个周期激光脉冲电离电子的二维动量分布.我们发现一个复杂的二维干涉图案，类似ATI环在较高的能量和显示Ramsauer-Townsend衍射振荡的角分布阈值附近。CTMC-T的计算提供了一个半经典的解释所选择的分波的优势。虽然目前的计算涉及氢，但我们发现与最近稀有气体实验数据惊人的定性一致[1]。
英文摘要：
We analyze the two-dimensional momentum distribution of electrons ionized by few-cycle laser pulses in the transition regime from multiphoton absorption to tunneling by solving the time-dependent Schrödinger equation and by a classical-trajectory Monte Carlo simulation with tunneling (CTMC-T). We find a complex two-dimensional interference pattern that resembles ATI rings at higher energies and displays Ramsauer-Townsend diffraction oscillations in the angular distribution near threshold. CTMC-T calculations provide a semiclassical explanation for the dominance of selected partial waves. While the present calculation pertains to hydrogen, we find surprising qualitative agreement with recent experimental data for rare gases [1].
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
