view article
Figure 3
Geometry of Friedel pairs in an arbitrary detector position. A Friedel pair A–B is illustrated in the reference frame fixed to the sample. The incident beam and the detector are shown 180° offset in ω. The two diffracted beam paths are coincident and connect A with B through the grain. The diffraction angles can be calculated directly without precise knowledge about the grain position. B falls inside the projection of the sample envelope from A onto the detector in the opposite position. (b) Relative positions of the four diffraction spots from an (hkl) crystallographic plane of a grain on the detector. The two Friedel pairs are A1–B1 and A2–B2.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 46| Part 2| March 2013| Pages 297-311
doi:10.1107/S0021889813002604
Follow J. Appl. Cryst.
Sign up for e-alerts
E-alerts
Follow J. Appl. Cryst. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS