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Figure 3
Calculated flux of focused radiation with silicon- and platinum-coated mirrors and Si(111) crystals in the double-crystal monochromator obtained using the SHADOW code (Matz et al., 1996BB28; Lai & Cerrina, 1986BB27). The attenuation from beryllium windows of total thickness 1.5 mm is included. The dip at around 7 keV results from the experimental absorption curve of the technical Be used as window material. The maximum energy of 35 keV can be realized only with Si(311) monochromator crystals. Geometrical constraints of the DCM design limit the accessible energy range for Si(111) crystals to about 25 keV.

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