TIT# Direct mapping of fiber diffraction patterns into reciprocal space
AUT# Stribeck, Norbert; N”chel, Ulrich;
SOU# J. Appl. Cryst. (2009), 42, submitted 23 Sept 2008
LOC# xv118
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ABS# Based on the concept of Polanyi (\emph{Z. Physik} (1921), \textbf{7},
     149-180) the mapping of fiber diffraction patterns into the reciprocal
     space is revisited. The result is a set of concise mapping relations
     that does not contain approximations any more. This set permits the
     design of a direct method that, in principle, does not require refinement
     of mapping parameters even for patterns of tilted fibers. The method
     is unsuitable for diffuse scattering patterns. If inaccuracies of
     2 pixels can be tolerated, a pattern is automatically mapped into
     reciprocal space within 2 seconds. The method is developed for the
     processing of the extensive sets of patterns that are recorded in
     time-resolved wide-angle X-ray diffraction (WAXD) investigations of
     polymer materials.