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

International Tables for Crystallography (2006). Vol. C, ch. 5.3, p. 533

Figure 5.3.3.15 

E. Gałdeckaa

aInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 937, 50-950 Wrocław 2, Poland

[Figure 5.3.3.15]
Figure 5.3.3.15

The geometry of the diffractometer used by Fewster & Andrew (1995[link]). The scattering angle, 2ω′, is the fundamental angle for determination of the interplanar spacing and P is the analyser-groove entrance.