Speaker
Description
X-ray spectroscopy experiments often require high-brilliance sources of X-ray radiation, provided by synchrotron or X-ray free electron laser (XFEL) facilities. However, acquiring access to such facilities is a complex procedure, which involves proposal application, long wait for the beamtime and travel expenses. Recent advances in the compact X-ray sources allowed for development of laboratory X-ray spectroscopy setups. While being orders of magnitude less brilliant compared to large facility sources, modern X-ray tubes with built-in focusing optics enable measurements of X-ray absorption (XAS) and X-ray emission (XES) spectra in the laboratory environment. Despite the significant drawbacks (i.e. long acquisition times, limited energy range and noisy data), laboratory X-ray setups are a valuable research tool due to relatively low cost and practically unrestricted accessibility.
Herein, we report on development of laboratory setup for simultaneous acquisition of XAS, XES and X-ray fluorescence (XRF) data. Double von Hamos geometry-based spectrometer configuration allows for simultaneous XAS/XES measurements. On the other hand, the three-axis positioning stage enables XRF imaging and aids sample positioning. The setup is routinely used for the studies of electronic and structural properties of metal complexes, nanoformulation and biological samples.
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