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Figure 5
(a) The calculated results of the major factors which influence the resolving power of the spectrometer, including the source size (black), the optical fabrication error (purple), the optical aberrations – defocus (brown), coma (green), spherical aberration (blue) and the overall (thick red). The corresponding resolving powers of (a) are calculated and presented in (b), where the three different types of spectral resolutions are: Aideal = λ/Δλs (black), Atheory = λ/Δλsum (red), Atrace (dot-blue) obtained from the ray-tracing program; and a control signal Acontrol (grey) is plotted in the same spectral range, calculated by equation (1)[link], i.e. ideal resolution of A1 with identical L.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 4| July 2019| Pages 1058-1068
https://doi.org/10.1107/S1600577519004648
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