扩展原子系统的再散射
Rescattering for extended atomic systems
摘要：
激光驱动的电子再散射是原子和分子中许多强场现象的基础。在这里，我们将展示这种机制如何在扩展的原子系统中运作，从而产生有效的能量吸收。扩展系统的再散射也会导致能量损失，其极端形式会导致非线性光缔合。作为例子讨论了强激光与原子团簇的相互作用。我们解释快速电子发射，在实验和数值获得的光谱，在高度带电的集群电子的再散射。
英文摘要：
Laser-driven rescattering of electrons is the basis of many strong-field phenomena in atoms and molecules. Here, we will show how this mechanism operates in extended atomic systems, giving rise to effective energy absorption. Rescattering from extended systems can also lead to energy loss, which in its extreme form results in non-linear photo-association. Intense-laser interaction with atomic clusters is discussed as an example. We explain fast electron emission, seen in experimental and numerically obtained spectra, by rescattering of electrons at the highly charged cluster.
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