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Figure 8
(a) Diffraction orders n = ±1 generated by the FG (f = 1), illuminated using an SZP with s = −1 (top), s = 0 (middle) and s = +1 (bottom). (b) Intensity pattern obtained by aligning two fork gratings, FG1 and FG2, in cascade: the first with f1 = 1 and the second with f2 = 2. FG2 is illuminated either by the zeroth order of FG1 (n1 = 0, top) or by its first negative order (n1 = −1, bottom). The expected L values for each spot at the detector are indicated in white. The photon energy is 152 eV in all cases.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 3| May 2026| Pages 858-869
https://doi.org/10.1107/S160057752600322X
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