International
Tables for
Crystallography
Volume H
Powder diffraction
Edited by C. J. Gilmore, J. A. Kaduk and H. Schenk

International Tables for Crystallography (2018). Vol. H, ch. 2.2, p. 57

Figure 2.2.10 

A. Fitcha*

aESRF, 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France
Correspondence e-mail: fitch@esrf.fr

[Figure 2.2.10]
Figure 2.2.10

Multianalyser stage, nine channels separated by 2°, devised by Hodeau et al. (1998[link]), originally installed on the BM16 bending-magnet beamline at the ESRF with Ge(111) analyser crystals. With an undulator source, the greatly increased flux allows use of Si(111), which has a narrower Darwin width (by a factor of ∼2.4) and thus improved 2θ resolution, but with a lower fraction of the diffracted radiation accepted.