Chirped Auger electron emission due to field-assisted post-collision interaction
1 Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, 22761 Hamburg, Germany
2 Christian-Albrechts-Universität Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098 Kiel, Germany
3 Max-Born-Institut, Max-Born-Str. 2A, 12489 Berlin, Germany
4 Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
5 Helmholtz-Zentrum Dresden Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany
We have investigated the Auger decay in the temporal domain by applying a terahertz streaking light field. Xenon and krypton atoms were studied by implementing the free-electron laser in Hamburg (FLASH) as well as a source of high-order harmonic radiation combined with terahertz pulses from an optical rectification source. The observed linewidth asymmetries in the streaked spectra suggest a chirped Auger electron emission which is understood in terms of field-assisted post-collision interaction. The experimentally obtained results agree well with model calculations.
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