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Figure 3
(a)–(c) Diagrams illustrating the collection angle for the non-collection mirror, HFM and Wolter mirrors schemes. (d) The simulated reflectivity of the gold coating as a function of energy with different incident angles (green line and red line), and the square of the reflectivity at 89° (red line) corresponding to two reflections in the Wolter mirrors scheme. (e) Simulated LEG and HEG efficiencies for different methods as a function of energy. The solid line represents the constant incident angle method (88°), while the dashed line represents the constant included angle method (172°). (f) Total relative efficiencies for different schemes as a function of energy; the grating efficiencies with the constant incident angle method is used to calculate total efficiencies, and the data have been normalized. (g) SHADOW simulations at the detector plane with different mirror schemes and divergence angle settings.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 5| September 2025| Pages 1235-1243
https://doi.org/10.1107/S1600577525005314
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