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Figure 4
(a) Total efficiency of Cr/C multilayer-based cPGMs designed for different diffraction orders, (b) flux at sample and (c) their resolving powers. Detailed parameters of the I08 beamline used for flux and resolving power simulation in SHADOW are described in §1[link] and the same realistic figure errors are used as in Fig. 3[link]. The slit size is 10 µm. The parameters of multilayer-based cPGMs are: M1: −1st order, θblaze = 0.4°, d = 11.64 nm, 20 bi-layers; M2: −2nd order, θblaze = 0.5°, d = 7.27 nm, 40 bi-layers; M5: −5th order, θblaze = 0.5°, d = 5.82 nm, 60 bi-layers; M5′: same BMG as M5 but d = 5.73 nm for multilayer coating on the plane mirror. The conventional cPGM is denoted as S1 having a nickel-coated plane mirror and gold-coated blazed grating with θblaze = 0.4° and Cff = 4.

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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