Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 53, Issue 24, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6455/abc661
Keywords
Auger effect; inner-shell excitation; free-electron lasers
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Funding
- Deutsche Forschungsgemeinschaft through the Cluster of Excellence 'Advanced Imaging of Matter' [EXC 2056, 390715994]
- Deutsche Forschungsgemeinschaft through the collaborative research center 'Light-induced Dynamics and Control of Correlated Quantum Systems' [SFB925/A2, SFB925/A3]
- Deutsche Forschungsgemeinschaft [KI 482/20-1, LA 1431/5-1]
- Federal Ministry of Education and Research of Germany [05K10CHB]
- Innovation Pool initiative within the Helmholtz Association's research field Matter: 'Enabling Technologies for Compact High Rate Photon Sources' (ECRAPS)
- BMBF [05K16RKA]
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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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