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Megahertz-rate Ultrafast X-ray Scattering and Holographic Imaging at the European XFEL

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arxiv 2201.06350 v2 pith:R4FMNAU4 submitted 2022-01-17 cond-mat.mes-hall physics.acc-phphysics.ins-det

Megahertz-rate Ultrafast X-ray Scattering and Holographic Imaging at the European XFEL

Nanna Zhou Hagstr\"om , Michael Schneider , Nico Kerber , Alexander Yaroslavtsev , Erick Burgos Parra , Marijan Beg , Martin Lang , Christian M. G\"unther
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classification cond-mat.mes-hall physics.acc-phphysics.ins-det
keywords x-rayscatteringxfelexperimentsimagingrepetitioneuropeanholographic
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The advent of X-ray free-electron lasers (XFELs) has revolutionized fundamental science, from atomic to condensed matter physics, from chemistry to biology, giving researchers access to X-rays with unprecedented brightness, coherence, and pulse duration. All XFEL facilities built until recently provided X-ray pulses at a relatively low repetition rate, with limited data statistics. Here, we present the results from the first megahertz repetition rate X-ray scattering experiments at the Spectroscopy and Coherent Scattering (SCS) instrument of the European XFEL. We illustrate the experimental capabilities that the SCS instrument offers, resulting from the operation at MHz repetition rates and the availability of the novel DSSC 2D imaging detector. Time-resolved magnetic X-ray scattering and holographic imaging experiments in solid state samples were chosen as representative, providing an ideal test-bed for operation at megahertz rates. Our results are relevant and applicable to any other non-destructive XFEL experiments in the soft X-ray range.

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