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Figure 4
(a), (b), (c) Radiographs at a sample-to-detector distance of Δ = 189 mm after energy-dependent phase retrieval. The insets show the spectra that were inserted into the filter. Scale bars represent 1 mm. (d) Line plots showing a vertical mean over the bottom 20 rows of pixels of the images, as shown by the coloured boxes in panels (a)–(c). The data are offset along the y axis for clarity.

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CRYSTALLOGRAPHY
ISSN: 1600-5767
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