Figure 2.2.7.4

Helliwell, J. R.

doi:10.1107/97809553602060000577

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

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International Tables for Crystallography (2006). Vol. C. ch. 2.2, p. 40

Figure 2.2.7.4

J. R. Helliwell^a

^a Department of Chemistry, University of Manchester, Manchester M13 9PL, England

Figure 2.2.7.4

The rocking width of an individual reflection for the case of Fig. 2.2.7.2(c) and a vertical rotation axis. φ_R is determined by the passage of a spherical volume of radius $[\varepsilon_s]$ (determined by sample mosaicity and a conventional-source-type spectral spread) through a nest of Ewald spheres of radii set by δ = ½ [δλ/λ]_corr and the horizontal convergence angle γ_H. From Greenhough & Helliwell (1982).