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Updated: Feb 2, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Implications of X-ray beam profiles on qualitative and quantitative synchrotron micro-focus X-ray fluorescence
Alexander P Morrell1, J Frederick W Mosselmans2, Kalotina Geraki2
1Aston Institute of Materials Research, School of Engineering, University of Aston, Birmingham B4 7ET, UK.
Abstract:
Synchrotron radiation X-ray fluorescence microscopy is frequently used to investigate the spatial distribution of elements within a wide range of samples. Interrogation of heterogeneous samples that contain large concentration ranges has the potential to produce image artefacts due to the profile of the X-ray beam. The presence of these artefacts and the distribution of flux within the beam profile can significantly affect qualitative and quantitative analyses. Two distinct correction methods have been generated by referencing the beam profile itself or by employing an adaptive-thresholding procedure. Both methods significantly improve qualitative imaging by removing the artefacts without compromising the low-intensity features. The beam-profile correction method improves quantitative results but requires accurate two-dimensional characterization of the X-ray beam profile.
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