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Figure 5
The focusing performance in terms of peak gain and fraction of photons in the central speckle is shown versus the focal spot size, achieved by combining #!N = 1 to 60 lenses with #!R = 50 µm. Aberrated lenses (using the mean deformation from Fig. 4[link]) for 10, 8.5 and 7 keV are shown by the orange solid, dashed and dotted lines, respectively. Associated experimental data are shown by the red triangles and stars for I13 and P06, respectively. The theoretically achievable performance with a perfect phase plate fitted after the lens stack, that is, no remaining wavefront errors, and taking phase plate absorption into account, is shown by the blue circles. Experimental results from Seiboth et al. (2017BB31) are represented by the yellow square. Aberration-free lenses for 10, 8.5 and 7 keV are shown by the blue solid, dashed and dotted line, respectively. Calculated results for applying a phase plate derived from the mean lens shape (cf. Fig. 4[link]) to the DLS and P06 experimental data are represented by the blue triangles and stars, respectively.

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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