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Figure 4
Images of a 50 µm-thick gold wire placed into an unfocused monochromatic (15 keV) beam at bending-magnet beamline B16 (DLS, UK): direct image taken with an X-ray microscope (left); raw XBI image obtained using 400 µm circular aperture and L/D = 2 (centre); beam cross-section image reconstructed using 20 Lucy–Richardson iterations (right). Other XBI parameters: 125 µm Kapton foil, α = 27.8°, and L = 5 mm, D = 10 mm, CMOS detector with 7 µm pixels fibre-optically coupled with a Gd2O2S:Tb scintillator foil (van Silfhout & Kachatkou, 2008BB22), integration time 3 s.

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