强X射线laser脉冲中团簇的电离
Ionization of clusters in strong X-ray laser pulses
摘要：
采用混合量子/经典方法研究了强X射线激光与氩团簇相互作用的效应。与单个原子相比，我们发现团簇的电离受到抑制，这与在强激光脉冲中观察到的稀有气体团簇的行为形成鲜明对比。我们已经确定了两个影响负责这种现象：一个高的空间电荷的集群结合一个小的振幅和离域的电子在集群中。我们阐明了不同的场强和集群大小的影响。
英文摘要：
The effect of intense X-ray laser interaction on argon clusters is studied theoretically with a mixed quantum/classical approach. In comparison to a single atom we find that ionization of the cluster is suppressed, which is in striking contrast to the observed behavior of rare-gas clusters in intense optical laser pulses. We have identified two effects responsible for this phenomenon: A high space charge of the cluster in combination with a small quiver amplitude and delocalization of electrons in the cluster. We elucidate their impact for different field strengths and cluster sizes.
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