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Measurement of the spatial coherence of hard synchrotron radiation using a pencil beam
2017
Chinese Optics Letters (COL)
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We present a simple method to measure the spatial coherence of hard x-ray beams. Based on the convolution of Gaussian functions, we analyze the diffraction patterns of a grating irradiated by partially coherent hard x rays with a constrained beam diameter. The spatial coherence properties of an x-ray beam are obtained from the width of the diffraction peaks with high accuracy. The results of experiments conducted by combining a pinhole with a grating show a good agreement with our calculation using the Gaussian-Schell model.
doi:10.3788/col201715.033401
fatcat:x6p6bnqwafdtbojnwy5fqcopqi