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Figure 2
(a) Horizontal and (b) vertical beam propagation from the intermediate source point to the detector. The position of the sample is shown as a dashed vertical line. The inset in each figure shows a zoomed-in region around the sample position. The red-filled areas represent the 707 eV photon beams from the fundamental harmonic of the undulators. The blue-filled areas represent the beams at 1414 eV photon energy originating from the second harmonic of the undulators. The vertical separation between fundamental and second-harmonic beams near the zone-plate focus arising from the off-axis component of the diffractive optics can be used to block the unwanted radiation.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 30| Part 2| March 2023| Pages 284-300
https://doi.org/10.1107/S1600577523000619
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