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Figure 6
Calculated and measured focusing efficiencies as a function of the number of levels for nickel zone plates at 6.5 keV. The discrepancy is caused by manufacturing errors and pattern distortions. The two curves follow the same trend; the addition of further levels results in a smaller relative gain as the number of levels increases.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 21| Part 3| May 2014| Pages 497-501
https://doi.org/10.1107/S1600577514003403
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