Auger electron wave packet interferometry on extreme timescales with coherent soft x-rays

Publication date
2020-11
Document type
Research article
Author
Usenko, Sergey
Schwickert, David
Przystawik, Andreas
Baev, Karolin
Baev, Ivan
Braune, Markus
Bocklage, Lars
Czwalinna, Marie Kristin
Deinert, Sascha
Düsterer, Stefan
Hans, Andreas
Hartmann, Gregor
Haunhorst, Christian
Kuhlmann, Marion
Palutke, Steffen
Röhlsberger, Ralf
Rönsch-Schulenburg, Juliane
Puntel Schmidt, Philipp
Skruszewicz, Slawomir
Toleikis, Sven
Viefhaus, Jens
Martins, Michael
Knie, André
Laarmann, Tim
Organisational unit
DOI
URI
Scopus ID
ISSN
Series or journal
Journal of physics : one of the major international journals in atomic, molecular and optical physics, covering the study of atoms, ion, molecules or clusters, their structure and interactions with particles, photons or fields. B, Atomic, molecular and optical physics
Periodical volume
53
Part of the university bibliography
✅
Abstract
Wave packet interferometry provides benchmark information on light-induced electronic quantum states by monitoring their relative amplitudes and phases during coherent excitation, propagation, and decay. The relative phase control of soft x-ray pulse replicas on the single-digit attosecond timescale achieved in our experiments makes this method a powerful tool to probe ultrafast quantum phenomena such as the excitation of Auger shake-up states with sub-cycle precision. In this contribution we present first results obtained for different Auger decay channels upon generating L-shell vacancies in argon atoms using Michelson-type all-reflective interferometric autocorrelation at a central free-electron laser photon energy of 274.7 eV.
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