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TH2A0 |
Short Free-electron Laser Pulses: The User Perspective | |
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Free-electron laser sources can deliver x-ray pulses with unprecedented intensities. While often the performance of the x-ray laser sources and experimental needs revolve about the achievable pulse energies, the pulse length is an equally or perhaps even more important parameter. Already the first ionization measurements in atomic neon revealed that the x-ray dynamics change fundamentally when the pulse length approaches the femtosecond time scales of inner-shell decay processes [1]. Related, the pulse length was demonstrated to be an important parameter for the electronic response in diffraction experiments [2] and discussed in the broader context of damage processes in femtosecond crystallography [3] and imaging [4]. With the advent of attosecond x-ray pulses, new opportunities opened for non-linear X-ray spectroscopy [5] as well as following coherent electronic processes [6]. In my talk, I will briefly present these various short pulse applications to set the stage for the workshop discussions.
[1] Young et al., Nature 466, 7302 (2010) [2] Ferguson et al., Sci. Adv. 2, 1500837 (2016) [3] Nass et al., Nat. Comm. 11, 1814 (2020) [4] Ho et al., Nat. Comm 11, 167 (2020) [5] O¿Neil, PRL 125, 073203 (2020) [6] Li., Science 375, 285 (2022) |
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Slides TH2A0 [2.888 MB] | |
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