International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

International Tables for Crystallography (2006). Vol. C. ch. 8.8, p. 736

Figure 8.8.1 

J. Gjønnesa

aDepartment of Physics, University of Oslo, PO Box 1048, Blindern, N-0316 Oslo, Norway

[Figure 8.8.1]
Figure 8.8.1

Schematic representations of four convergent-beam configurations used for structure-factor determination: (a) intensity profile of a low-order reflection, g; (b) non-systematic three- or four-beam configuration with a strong coupling reflection, h; (c) symmetric many-beam configuration in a dense zone; (d) integrated intensity measurement of high-order reflections using a wide aperture (Taftø & Metzger, 1985[link]).