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Figure 12
(a) The beam intensity on the detector without any sample in the beam: azimuthal average for the case where the flight tube is flushed with nitrogen (black curve) and the evacuated case (8 × 10−4 mbar, red curve). In this experiment, the coherent nanobeam was created by an FZP. (b) The complex wavefield in the focal plane of the FZP with a central stop, as determined by ptychography. (c) A far-field image of the nanobeam as measured on the pixel detector (cropped to 600 × 600 pixels around the optical axis). [Reprinted with permission from Schroer, Seyrich et al. (2019BB48), copyright (2019) SPIE.]

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 53| Part 4| August 2020| Pages 957-971
https://doi.org/10.1107/S1600576720008420
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