In:
Journal of Synchrotron Radiation, International Union of Crystallography (IUCr), Vol. 26, No. 5 ( 2019-09-01), p. 1432-1447
Abstract:
The European X-ray Free-Electron Laser (EuXFEL) delivers extremely intense ( 〉 10 12 photons pulse −1 and up to 27000 pulses s −1 ), ultrashort ( 〈 100 fs) and transversely coherent X-ray radiation, at a repetition rate of up to 4.5 MHz. Its unique X-ray beam parameters enable novel and groundbreaking experiments in ultrafast photochemistry and material sciences at the Femtosecond X-ray Experiments (FXE) scientific instrument. This paper provides an overview of the currently implemented experimental baseline instrumentation and its performance during the commissioning phase, and a preview of planned improvements. FXE's versatile instrumentation combines the simultaneous application of forward X-ray scattering and X-ray spectroscopy techniques with femtosecond time resolution. These methods will eventually permit exploitation of wide-angle X-ray scattering studies and X-ray emission spectroscopy, along with X-ray absorption spectroscopy, including resonant inelastic X-ray scattering and X-ray Raman scattering. A suite of ultrafast optical lasers throughout the UV–visible and near-IR ranges (extending up to mid-IR in the near future) with pulse length down to 15 fs, synchronized to the X-ray source, serve to initiate dynamic changes in the sample. Time-delayed hard X-ray pulses in the 5–20 keV range are used to probe the ensuing dynamic processes using the suite of X-ray probe tools. FXE is equipped with a primary monochromator, a primary and secondary single-shot spectrometer, and a timing tool to correct the residual timing jitter between laser and X-ray pulses.
Type of Medium:
Online Resource
ISSN:
1600-5775
DOI:
10.1107/S1600577519006647
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2019
detail.hit.zdb_id:
2021413-3
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