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Figure 13
Absorption (left) and DPC (right) images of a diatom (phytoplankton cell) recorded at 1790 eV photon energy at beamline 2-ID-B at the APS. This image was also obtained with the modified soft X-ray detector. While the specimen is visible in absorption, the DPC image shows considerably more detail. The diagonal line visible in both images is the edge of a silicon nitride window. The horizontal line is caused by a sudden change in X-ray intensity; thus it is almost invisible in the differential measurement. This image was recorded using a 50 nm-outermost-zone-width zone plate, 25 nm steps and 3 ms dwell time.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 15| Part 4| May 2008| Pages 355-362
doi:10.1107/S0909049508008509
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