Figure 4
Variation of the total CDTS diffraction intensity I as a function of the D crystal rocking angle ΔθD. φ = 2°. The two-beam curve was calculated with the parasitic 404 and reflections artificially ignored for crystal(s) D. (a) D scan rocking curve of the CDTS analyzer. The inset shows the resolution function of CDTS at ΔθD = 128 µrad (calculated with a four-beam diffraction of crystal D taken into account). (b) D scan rocking curve of the CDTDS analyzer (with the diffraction set-up in the inset). Crystals D1 and D2 are assumed to be rotated simultaneously along opposite directions (D1 counterclockwise) with the same speed (with the C/S crystal fixed). |