Calibrated dual soft x-ray spectrometer end-station for polarization-dependent resonant inelastic x-ray scattering
Abstract
In this work, we present an end-station with two perpendicular high-efficiency soft x-ray spectrometers at the plane grating monochromator beamline in the Physikalisch-Technische Bundesanstalt laboratory at the electron storage ring BESSY II. It is designed for polarization-dependent x-ray emission spectroscopy and resonant inelastic x-ray scattering spectroscopy and covers the photon energy range from 80 to 1100 eV. Depending on the energy range to be monitored, either one of two spherical mirrors and either one of three variable line spacing gratings in each spectrometer is selected to provide optimal performance in terms of resolving power and detection yield. A calibration of the optical components and detection devices enables quantitative measurements and the possibility of the determination of x-ray fluorescence fundamental parameters in the soft x-ray range.
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