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Figure 1
The coherent X-ray beam was focused by a set of N Be CRLs onto a Siemens star sample (1 µm-thick tungsten on a diamond membrane). The sample was scanned in a grid fashion in the x and y direction. We collected a diffraction pattern for every scan point in order to reconstruct the complex-valued probe function via ptychography. The inset shows the geometry for a single lens with geometric aperture D, radius of curvature R, lens thickness l and distance between parabola apices d.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 25| Part 1| January 2018| Pages 108-115
https://doi.org/10.1107/S1600577517015272
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