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Figure 7
O beam. Phase differences between the defocused – 3.20 (15) µm – and focused travelling fringes versus the detector pixels. The bars are the associated standard uncertainties. The solid line is the line approximating the data; the filled area indicates the standard deviation. The phase difference at the 3.46 virtual pixel having the same residual vertical offset as the H beam is 0.138 (2) d220.

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CRYSTALLOGRAPHY
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