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Figure 3
DuMond diagrams for two identical crystals arranged non-dispersively (top) and dispersively (bottom). Over small ranges of θ, the crystal traces may be treated as lines, as shown here. For the non-dispersive case, the trace of the second crystal is shown shifted against that of the first for clarity. The light grey regions show the wavelengths and incidence angles of the rays selected by either crystal. The dark grey region in each plot shows the wavelengths and incidence angles selected by both crystals.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 19| Part 3| March 2012| Pages 408-416
doi:10.1107/S0909049512009272
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