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Figure 3
Comparison of images produced by two surfaces: horizontally focusing and vertically collimating. (a) Exact diaboloid implementation (solving quartic equation), and (b) approximated implementation [equation (1)[link] detrended with zplane = θY]. The calculated FWHM values are 0.3 nm and 93 nm, respectively.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 4| July 2021| Pages 1041-1049
https://doi.org/10.1107/S160057752100401X
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