Figure 2.2.6.2

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. 36

Figure 2.2.6.2

J. R. Helliwell^a

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

Figure 2.2.6.2

Diffractometry with normal-beam equatorial geometry and angular motions ω, χ and φ. The relp at P is moved to Q via φ, from Q to R via χ, and R to S via ω. From Arndt & Willis (1966). In this specific example, the φ axis is parallel to the ω axis (i.e. χ = 0°).