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Figure 2
Distribution of the Bragg spot positions on the detector (a) and as a function of 2θ (b). Three sharp peaks are observed at 2θ ≃ 18.3, 21.1 and 30.1°. These peak positions correspond to {111}fcc + {002}hcp, {200}fcc and {220}fcc + {110}hcp, respectively. In addition, one broad peak is observed at 2θ ≃ 19.4°, which corresponds to the {101}hcp position. Note that the yield of the {220}fcc + {110}hcp peak is undervalued because of the limit on the detection region. The angular correlations were calculated using spots lying on the {111}fcc + {002}hcp peak (18.1° < 2θ < 18.5°, filled with pink) and the {101}hcp peak (18.5° < 2θ < 20.7°, filled with green). Insets show the images of the Bragg spots located on the {111}fcc + {002}hcp and {101}hcp peaks. (c) A representative single-shot image used for the angular-correlation analysis. The image contains two Bragg spots on the {111}fcc + {002}hcp and {101}hcp rings. The areas marked by white rectangles are zoomed in (×10). (d) F.c.c. and h.c.p. stacking sequences.

IUCrJ
Volume 7| Part 2| March 2020| Pages 276-286
ISSN: 2052-2525
https://doi.org/10.1107/S205225252000144X