Christoph Sahle - ID20, The hard X-ray inelastic scattering beamline

Video funded by Streamline - This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 870313.

Beamline ID20 is dedicated to the study of electronic and magnetic excitations via resonant- and non-resonant inelastic X-ray scattering spectroscopy. As one of the ESRF Upgrade Phase One projects, ID20 is the successor of one of the two branches of the former beamline ID16 and is operational since 2012. We provide instruments for inelastic X-ray scattering, X-ray absorption and emission spectroscopy, and, most recently, online X-ray diffraction.

The two main instruments are based on Johann geometry spectrometers, one of which operates at fixed analyzer Bragg angle and offers a large solid angle and one optimized for energy resolution and flexibility of the scattering geometry. Former instrument is mostly used for the study of shallow core and bound electron excitations off resonance (often referred to as X-ray Raman scattering spectroscopy). Latter is optimized for studies of electronic and collective magnetic excitations at resonance, or resonant inelastic X-ray scattering.

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