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Figure 3
Simulated diffraction-limited spot of a Fresnel zone plate with an outermost zone width of 132 nm. (a) Without (∊ = 0) and (b) with a central beam stop with half the diameter of the zone plate (∊ = 0.5). The intensity is normalized to the maximum intensity in the centre and visualized on a logarithmic scale. (c) Calculated intensity of a knife-edge scan through (a) in black and its intensity profile (red dashed line), and (d) the corresponding knife-edge profile for (b) in black and its intensity profile (red dashed line).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 2| March 2019| Pages 467-472
https://doi.org/10.1107/S1600577519000869
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