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Figure 5
(a) Scheme of the 4B-CDDS analyzer. (b) Use of shorter `comb crystals' as the dispersing crystals. Note that the side surfaces [almost parallel to (008) planes] do not participate in the multi-crystal diffraction since they have a slightly different diffraction angle (Shvyd'ko, 2008BB11). (c) The energy resolution function of 4B-CDDS calculated with the following parameters: 220 reflection for C (bC = −0.0465), φ = 2° and [\theta _{\rm B}^{\,008}] = 89° for D1 and D2, and 440 reflection for S (bS = −6.7). The inset shows the resolution function of 4B-CDDS on a linear scale. The Lorentzian distribution function (dashed line) has the same peak reflectivity and peak width as the 4B-CDDS curve. The CDTDS curve (red online) was calculated with φ = 2° [see Fig. 4(b)[link]].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 18| Part 6| September 2011| Pages 899-906
doi:10.1107/S0909049511036703
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