Secondary electron cascade in attosecond photoelectron spectroscopy from metals
نویسندگان
چکیده
Synopsis In a recent attosecond photoelectron spectroscopy experiment from a metal surface [A. L. Cavalieri et al. Nature (London) 449, 1029 (2007)] a tail of unexplained low-energy electrons was measured. These electrons are shown to be due to electron-electron scatterings as the photoelectrons leave the metal. We develop a model for single scattering and a model based on cascade theory to describe these electrons. Our model explains the observed background, and the amplitude of the measured streaking spectrum.
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تاریخ انتشار 2009