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Figure 11
A comparison of averaged Bragg-plane slope errors [\langle \sigma _{\theta} \rangle] (upper row) and normalized dispersions [\langle \Sigma _{\Delta\theta} \rangle] of the Bragg reflection widths (bottom) for the reference Si crystal in the 531 Bragg reflection measured with the old unpolished (stars) and the new polished (open circles) Be windows. The [\langle \sigma _{\theta} \rangle] and [\langle \Sigma _{\Delta\theta} \rangle] values are calculated as a function of the area-detector binning number N in 4 mm × 4 mm, 2 mm × 2 mm or 1 mm × 1 mm ROIs, similar to Fig. 2[link].

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