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Figure 4
Spatial profiles of the focused beam (111) diffracted from the thin Si(111) membrane of target thickness 8 µm and recorded at the focus by using a high-resolution CCD camera (open circles) at different angles relative to the lens aperture. Upper panel: dynamical diffraction (the total Bragg diffraction region of the crystal is at 35 µrad from the center of the aperture). Bottom panel: kinematical diffraction (the total Bragg diffraction region is at 140 µrad from the center of the aperture). Solid lines: theoretical curves calculated for a perfect Si crystal of thickness 8.67 µm, experimentally measured source size and a camera resolution of 1.0 µm.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 16| Part 5| August 2009| Pages 666-671
doi:10.1107/S0909049509029860
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