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Figure 2
(a) Reflectivity of plane mirrors with single-layer (SLM) or multilayer (MM) coatings. (b) The −1st order diffraction efficiency of BG, BMG0.5 and BMG0.4. (c) The −1st order diffraction efficiency for different cPGM combinations. (d) Corresponding Cff value. BMG0.5 is characterized by the following parameters: θblaze = 0.5°, d = 14.54 nm, 10 bi-layers. BMG0.4: θblaze = 0.4°, d = 11.64 nm, 20 bi-layers. BG: Au coating, θblaze = 0.4°, Cff = 1.7. All SLMs are plane mirrors coated with a Ni layer having no roughness. The multilayer plane mirror (MM) placed in front of the BMG is coated with the same multilayer structure as the BMG. All gratings have 600 lines mm−1 line density. The dashed line in (c) signifies 3 keV and red stars denote the efficiency of curve 1 and 4 at 3 keV.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 24| Part 1| January 2017| Pages 168-174
https://doi.org/10.1107/S1600577516017884
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