固体中条纹实验的一维模型
One-dimensional model of streaking experiment in solids
摘要：
提出了研究金属表面亚飞秒激光实验的一维模型。该模型考虑了电子在金属块体中运动的赝势、金属块体中表面外电磁场法线的突然减小、金属中电子的平均自由程的有限值以及金属中屏蔽正空穴对电子的作用等重要特征。结果表明，拖尾效应与电子的终态能量有关，而与初态性质（定域或离域）的关系更为明显。该结果可能为解释最近的实验结果提供了额外的机制[Cavalieri \emph{et.al}，NATURE \textbf{449} 1029-1032 2007 ]。
英文摘要：
One-dimensional model for study of sub--femtosecond experiment with metal surface is put forward. The important features of the system, such as the pseudopotential for electron motion in the metal bulk, abrupt decrease of the normal to the surface external electromagnetic field in the bulk, finite value of the mean free path for electrons in the metal, and action on the ejected electron by the (stationary) screened positive hole in the metal are included in the model. The results obtained reveal dependence of the streaking effect on the final energy of the ejected electron. Meanwhile, the dependence of the streaking on the character of the initial state (localized or delocalized) appears to be more pronounced. This result may provide an additional mechanism for interpretation of the results of very recent experiment [Cavalieri \emph{et.al}, NATURE \textbf{449} 1029-1032 2007 ].
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