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(a) Focused X-ray spot size in vertical and horizontal directions measured using a tungsten crosshair and a monochromatic X-ray beam at 81 keV; (b) Comparison of X-ray diffraction patterns of a CeO2 standard (loaded in ~30-μm thick gasket hole) measured using focused and unfocused beam, respectively; (c) Expanded view of high Q range (10–20 Å−1).
