Quantum Theory of Recollisional (e, 2e) Process in Strong Field Nonsequential Double Ionization of Helium
Quantum Theory of Recollisional (e, 2e) Process in Strong Field Nonsequential Double Ionization of Helium
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DOI：
10.1103/physrevlett.104.253201
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发表时间：
2010-06-21
影响因子：
8.6
通讯作者：
Lin, C. D.
中科院分区：
文献类型：
--
作者：
Chen, Zhangjin;Liang, Yaqiu;Lin, C. D.
基于全量子碰撞模型和无场电子碰撞电离理论，计算了氦原子强场非顺序双电离(NSDI)中两个出射电子的关联动量谱，并与最近的实验结果进行了比较。通过分析光电子能谱中二元和反冲碰撞的相对强度，我们证实了实验中观察到的指状结构是两个发射电子之间库仑相互作用的结果。我们的结果在最基本的水平上支持了强场NSDI的再碰撞机制。
Based on the full quantal recollision model and field-free electron impact ionization theory, we calculate the correlated momentum spectra of the two outgoing electrons in strong field nonsequential double ionization (NSDI) of helium to compare with recent experiments. By analyzing the relative strength of binary versus recoil collisions exhibited in the photoelectron spectra, we confirm that the observed fingerlike structure in the experiment is a consequence of the Coulomb interaction between the two emitted electrons. Our result supports the recollision mechanism of strong field NSDI at the most fundamental level.