%0 Journal Article
%A Dziarzhytski, Siarhei
%A Biednov, M.
%A Dicke, B.
%A Wang, A.
%A Miedema, P. S.
%A Engel, R. Y.
%A Schunck, Jan
%A Redlin, H.
%A Weigelt, Holger
%A Siewert, F.
%A Behrens, Christopher
%A Sinha, M.
%A Schulte, Amelie
%A Grimm-Lebsanft, B.
%A Chiuzbăian, S. G.
%A Wurth, W.
%A Beye, M.
%A Rübhausen, M.
%A Brenner, Guenter
%T The TRIXS end-station for femtosecond time-resolved resonant inelastic X-ray free-electron laser FLASH
%J Structural dynamics
%V 7
%N 5
%@ 2329-7778
%C Melville, NY
%I AIP Publishing LLC
%M PUBDB-2020-03171
%P 054301 (1-12)
%D 2020
%X We present the experimental end-station TRIXS dedicated to time-resolved soft x-ray resonant inelastic x-ray scattering (RIXS) experiments on solid samples at the free-electron laser FLASH. Using monochromatized ultrashort femtosecond XUV/soft x-ray photon pulses in combination with a synchronized optical laser in a pump-probe scheme, the TRIXS setup allows measuring sub-picosecond time-resolved high-resolution RIXS spectra in the energy range from 35 eV to 210 eV, thus spanning the M-edge (M<sub>1</sub> and M<sub>2,3</sub>) absorption resonances of 3d transition metals and N<sub>4,5</sub>-edges of rare earth elements. A Kirkpatrick–Baez refocusing mirror system at the first branch of the plane grating monochromator beamline (PG1) provides a focus of (6 × 6) μm<sup>2</sup> (FWHM) at the sample. The RIXS spectrometer reaches an energy resolution of 35–160 meV over the entire spectral range. The optical laser system based on a chirped pulse optical parametric amplifier provides approximately 100 fs (FWHM) long photon pulses at the fundamental wavelength of 800 nm and a fluence of 120 mJ/cm<sup>2</sup> at a sample for optical pump-XUV probe measurements. Furthermore, optical frequency conversion enables experiments at 400 nm or 267 nm with a fluence of 80 and 30 mJ/cm<sup>2</sup>, respectively. Some of the first (pump-probe) RIXS spectra measured with this setup are shown. The measured time resolution for time-resolved RIXS measurements has been characterized as 287 fs (FWHM) for the used energy resolution.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:32953941
%U <Go to ISI:>//WOS:000569934600001
%R 10.1063/4.0000029
%U https://bib-pubdb1.desy.de/record/442673