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Figure 3
Rocking-curve measurement of type Ib (100) diamond crystal using Ge(220) as an analyser crystal. The two undulators were operated: U23 16.3 mm, and U42 17.11 mm. The beam current was 134 mA with 3 × 3 mm slits after two absorbers, 2.5 mm of carbon and 1 mm of aluminium. The theoretical rocking-curve widths of diamond (111) and Ge(220) reflections are 0.9 mdeg and 1.9 mdeg, respectively, at 13.5 keV, which gives rise to a convoluted rocking-curve width of 2.2 mdeg (Sanchez del Rio & Dejus, 1998BB8).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 5| Part 3| May 1998| Pages 215-221
https://doi.org/10.1107/S0909049597018785
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