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

International Tables for Crystallography (2006). Vol. C. ch. 2.7, p. 118

Figure 2.7.3.3 

A. R. Langa

a H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, England

[Figure 2.7.3.3]
Figure 2.7.3.3

Double-crystal topographic arrangement, + − setting. Asymmetric reflection from reference crystal U. Specimen crystal divided into regions V and V′.