Strong-Field Tunneling from a Coherent Superposition of Electronic States
Strong-Field Tunneling from a Coherent Superposition of Electronic States
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DOI：
10.1103/physrevlett.112.213001
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发表时间：
2014-05
影响因子：
8.6
通讯作者：
L. Fechner;N. Camus;J. Ullrich;T. Pfeifer;R. Moshammer
中科院分区：
文献类型：
--
作者：
L. Fechner;N. Camus;J. Ullrich;T. Pfeifer;R. Moshammer
在运动学完全实验中研究了激光诱导电子态相干叠加隧道电离。在泵浦探测方案中，自旋轨道波包通过第一电离步骤从中性物质发射。多电子相干波包探测作为时间的函数的第二脉冲电离系统。通过测量延迟相关的电子动量分布，我们直接图像的非稳态多电子波函数的演变。将结果与模拟进行比较，我们测试了有关电子动量分布和隧穿过程本身的常见假设。
Laser-induced tunnel ionization from a coherent superposition of electronic states inis studied in a kinematically complete experiment. Within a pump-probe scheme a spin-orbit wave packet is launched through the first ionization step from the neutral species. The multielectron coherent wave packet is probed as a function of time by the second pulse which ionizes the system to. By measuring delay-dependent electron momentum distributions we directly image the evolution of the nonstationary multielectron wave function. Comparing the results with simulations we test common assumptions about electron momentum distributions and the tunneling process itself.