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Figure 6
(a) Reciprocal space of a perfect micrometer-sized f.c.c. crystal with octahedral habit. The reciprocal space is shown as a cut in the plane spanned by the (110) and (002) vectors. Only the left half of the plane is shown. The streaks of intensity and fringes are perpendicular to the facets of the crystal and are what CXD aims to measure. The coherent pattern is identically reproduced at each Bragg peak, including the origin. (b) Cut through reciprocal space of an octahedral f.c.c. crystal with a 16% contraction of the spacing of the top layer in the crystal. This surface strain causes the Bragg peaks to be asymmetric around their center. The surface contraction leads to stronger intensities on the high q side of the Bragg peak.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 15| Part 6| October 2008| Pages 576-583
doi:10.1107/S0909049508029439
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