Resonance-enhanced x-ray multiple ionization of a polyatomic molecule

Li, X.; Rudenko, Artem; Mazza, Tommaso; Rörig, Aljoscha; Anders, Nils; Baumann, Th.; Eckart, Sebastian; Erk, Benjamin; Fanis, A. De; Fehre, K.; Dørner, R.; Foucar, L.; Grundmann, Sven; Grychtol, Patrik; Hartung, Alexander; Hofmann, M.; Ilchen, Markus; Janke, Ch.; Kastirke, Gregor; Kircher, Max; Kubiček, Katharina; Kunitski, Maksim; Meister, Severin; Montaño, J.; Music, Valerija; Nalin, Giammarco; Ovcharenko, Yevheniy; Passow, C.; Pier, Andreas; Rennhack, Nils; Rist, J.; Rivas, Daniel E.; Schlichting, Ilme; Schmidt, L. Ph. H.; Schmidt, Ph.; Schöffler, M. S.; Siebert, Juliane; Strenger, N.; Trabert, D.; Trinter, Florian; Vela-Peréz, Isabel; Wagner, R.; Walter, Peter; Weller, M.; Ziółkowski, Pawel; Czasch, A.; Meyer, Michael; Jahnke, T.; Rolles, Daniel; Boll, Rebecca

doi:10.1103/physreva.105.053102

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…It uses the beam from the SASE3 soft X-ray undulator between the carbon and argon K edges, in the range 260-3200 eV. The instrument, described in detail by Mazza et al (2012) and Meyer et al (2023), was commissioned in 2018 (Meyer et al, 2023) and the results of the first successful user experiments have been published (Kastirke et al, 2020a,b;Eichmann et al, 2020;Mazza et al, 2020;LaForge et al, 2021;Jahnke et al, 2021;Li et al, 2021Li et al, , 2022aBoll et al, 2022;Feinberg et al, 2022). Experiments at the SQS instrument exploit the intense, short and coherent X-ray pulses for nonlinear phenomena studies (Mazza et al, 2020;Eichmann et al, 2020;LaForge et al, 2021;Boll et al, 2022), for time-resolved experiments following dynamical processes on the femtosecond timescale (Kastirke et al, 2020b;Jahnke et al, 2021;Grychtol et al, 2021;Rivas et al, 2022) and for investigations using coherent scattering techniques (Ekeberg et al, 2022;Feinberg et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

The beam transport system for the Small Quantum Systems instrument at the European XFEL: optical layout and first commissioning results

Mazza¹,

Baumann²,

Boll³

et al. 2023

J Synchrotron Radiat

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The Small Quantum Systems instrument is one of the six operating instruments of the European XFEL, dedicated to the atomic, molecular and cluster physics communities. The instrument started its user operation at the end of 2018 after a commissioning phase. The design and characterization of the beam transport system are described here. The X-ray optical components of the beamline are detailed, and the beamline performances, transmission and focusing capabilities are reported. It is shown that the X-ray beam can be effectively focused as predicted by ray-tracing simulations. The impact of non-ideal X-ray source conditions on the focusing performances is discussed.

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Section: Introductionmentioning

confidence: 99%

The beam transport system for the Small Quantum Systems instrument at the European XFEL: optical layout and first commissioning results

Mazza¹,

Baumann²,

Boll³

et al. 2023

J Synchrotron Radiat

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“…While the photon-energy dependence was generally expected to map the decreasing photoabsorption cross section for increasing photon energy (far above any ionisation edges), the opposite trend has been reported for very high X-ray intensities 26 , and transient resonances during charge-up 28 can lead to charge states significantly higher than expected at certain photon energies [24][25][26][29][30][31] . Transient resonances have recently been found to influence molecular multiphoton ionisation 32 and to dramatically enhance scattering cross sections in X-ray diffraction imaging 33 , but they can also cause increased radiation damage 34 . These observations illustrate the complex interplay between imaging and transient electronic structure, as well as the necessity for a careful choice of all X-ray pulse parameters.…”

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confidence: 99%

Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses

Rörig,

Son,

Mazza

et al. 2023

Nat Commun

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Understanding the interaction of intense, femtosecond 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 was, so far, not studied systematically at free-electron lasers—its dependence on the photon energy. Here, we use resonant ion spectroscopy to map out the transient electronic structures occurring during the complex charge-up pathways of xenon. Massively hollow atoms featuring up to six simultaneous core holes determine the spectra at specific photon energies and charge states. We also illustrate how different X-ray pulse parameters, which are usually intertwined, can be partially disentangled. The extraction of resonance spectra is facilitated by the possibility of working with a constant number of photons per X-ray pulse at all photon energies and the fact that the ion yields become independent of the peak fluence beyond a saturation point. Our study lays the groundwork for spectroscopic investigations of transient atomic species in exotic, multiple-core-hole states that have not been explored previously.

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