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Updated: Jul 16, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
A monolithic Fresnel bimirror for hard X-rays and its application for coherence measurements
Wolfram Leitenberger1, Ullrich Pietsch
1Universität Potsdam, Institut für Physik, Am Neuen Palais 10, D-14468 Potsdam, Germany. leitenberger@uni-potsdam.de
Abstract:
Experiments using a simple X-ray interferometer to measure the degree of spatial coherence of hard X-rays are reported. A monolithic Fresnel bimirror is used at small incidence angles to investigate synchrotron radiation in the energy interval 5-50 keV with monochromatic and white beam. The experimental set-up was equivalent to a Young's double-slit experiment for hard X-rays with slit dimensions in the micrometre range. From the high-contrast interference pattern the degree of coherence was determined.
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