Attosecond streaking in the low-energy region as a probe of rescattering
Attosecond streaking in the low-energy region as a probe of rescattering
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低能区阿秒条纹作为再散射的探针
DOI：
10.1103/physrevlett.107.183001
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发表时间：
2011
影响因子：
8.6
通讯作者：
and A. F. Starace
中科院分区：
文献类型：
--
作者：
X. H. Xu;L. Y. Peng;Z;Zhang;Q. H. Gong;X. M. Tong;E. A. Pronin;and A. F. Starace
研究了在强红外激光场中，阿秒脉冲电离低能光电子的动力学过程。而阿秒条纹通常涉及高能量PE的动量转移，当PE具有低的初始动能时，IR场可以通过诱导剩余离子的PE散射来控制连续电子动力学。一个半经典模型被用来表明，特定的PE轨迹在连续的电子-离子散射解释的干涉图案中表现出的低能量PE光谱。我们确认的轨迹的影响，通过一个完整的量子模拟。
The dynamics of low-energy photoelectrons (PEs) ionized by a single attosecond pulse in the presence of an intense infrared (IR) laser field is investigated. Whereas attosecond streaking usually involves momentum shifts of high-energy PEs, when PEs have low initial kinetic energies, the IR field can control the continuum-electron dynamics by inducing PE scattering from the residual ion. A semiclassical model is used to show that particular PE trajectories in the continuum involving electron-ion scattering explain the interference patterns exhibited in the low-energy PE spectrum. We confirm the effects of the trajectories by means of a full quantum simulation.