团簇的阿秒分辨荷电
Attosecond resolved charging of clusters
摘要：
阿秒激光脉冲打开了解决微观电子动力学的大门。所做的实验包括核心空穴的衰变、光电离和电子隧穿的时间分辨测量。所研究的过程共享的相干字符的动力学涉及很少，理想的一个活跃electron.here，我们引入一个计划来探测耗散多电子运动的时间。在这种情况下，阿秒探测使人们能够获得信息，这些信息在以后的时间丢失，并且由于动力学的不相干性质，无法通过能量域中的常规方法检索。作为一个具体的例子，我们将讨论在一个强飞秒脉冲与阿秒脉冲的稀有气体集团的充电。这个例子说明了阿秒脉冲的拟议使用，并建议在强真空紫外（VUV）脉冲的稀有气体团簇的能量吸收机制的争议的实验解决方案。
英文摘要：
Attosecond laser pulses open the door to resolve microscopic electron dynamics in time. Experiments performed include the decay of a core hole, the time-resolved measurement of photo ionization and electron tunneling. The processes investigated share the coherent character of the dynamics involving very few, ideally one active electron. Here, we introduce a scheme to probe dissipative multi-electron motion in time. In this context attosecond probing enables one to obtain information which is lost at later times and cannot be retrieved by conventional methods in the energy domain due to the incoherent nature of the dynamics. As a specific example we will discuss the charging of a rare-gas cluster during a strong femtosecond pulse with attosecond pulses. The example illustrates the proposed use of attosecond pulses and suggests an experimental resolution of a controversy about the mechanism of energy absorption by rare-gas clusters in strong vacuum-ultraviolet (VUV) pulses.
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