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Multiple-core-hole resonance spectroscopy with ultraintense x-ray pulses
Sang-Kil Son, Aljoscha Rörig, Tommaso Mazza, Philipp Schmidt, Thomas Baumann, Benjamin Erk, Markus Ilchen, Joakim Laksman, Valerija Music, Shashank Pathak, Daniel Rivas, Daniel Rolles, Svitozar Serkez, Sergey Usenko, Robin Santra, Michael Meyer, and Rebecca Boll
International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (Fudan University, Shanghai, China, April 23-26, 2024) [poster] [BibTeX][poster: 3Mb]https://conferences.koushare.com/mps2024
Understanding the interaction of ultraintense and ultrafast x-ray pulses with heavy atoms is crucial for gaining insights into the structure and dynamics of matter. One key aspect of nonlinear light-matter interaction is its dependence on the photon energy, but there has been no systematic study at x-ray free-electron lasers (XFELs) so far. We present a joint theoretical and experimental study of highly charged xenon ions after interaction with XFEL pulses [1] scanning the photon energy over a wide range, which enables us to map out the transient resonances occurring during the complex charge-up pathways. Massively hollow atoms [2] featuring up to six simultaneous core holes determine the spectra at specific photon energies and charge states. The extraction of resonance spectra is facilitated by the fact that the ion yields become independent of the peak fluence beyond a saturation point. Our study lays the groundwork for novel spectroscopy of transient atomic species in exotic, multiple- core-hole states that have not been explored.
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[1] A. Rörig et al., Nat. Commun. (2023) 14, 5738.
[2] S.-K. Son, R. Boll and R. Santra, Phys. Rev. Res. (2020) 2, 023053.
Tags: XATOM,
Xe,
resonance,
spectroscopy,
SQS,
European XFEL,
CFEL,
DESY
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