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Figure 2
Working curves, i.e. the deflection angles ϕ + θ at the grating, depending on the monochromated photon energy for different monochromator operation modes and grating groove densities. At the top, for a groove density of 1200 mm−1 (d = 833.3 nm), the black curves refer to the `fixed focus' operation according to (10)[link] with the two different constants cff = 2.25 and cff = 1.5. The red curves refer to blaze maximum mode according to (8)[link] with two blaze angles, γ = 1.0° and γ = 1.5°. At the bottom, for a groove density of 75 mm−1 (d = 13,333 nm), only curves for cff = 1.5 and a blaze angle of γ = 0.25 ° are presented. The grey area indicates the range of inaccessible deflection angles according to (7)[link].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 4| July 2019| Pages 1181-1191
https://doi.org/10.1107/S1600577519004120
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