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Figure 1
Layout of an off-axis reflection zone plate and explanation of the corresponding parameters (see text). The blue rectangle marks the used section as an off-center cut-out of the full elliptical lens structure. R1 and R2 are the distances between source and focal plane to the center of the zone plate, respectively, while [R_1^{\,\prime}] and [R_2^{\,\prime}] are the corresponding distances to the center of the off-axis part of the lens (blue rectangle).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 20| Part 4| May 2013| Pages 522-530
doi:10.1107/S0909049513008613
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