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Figure 7
Validation of the assumption of surface absorption in the FEA model. Comparison of the length scales of: (blue) volumetric absorption pv(z) of a U20 undulator (period 20 mm, magnetic length 4.8 m, gap 11 mm) in Si at a Bragg angle of [\theta_{\rm{B}}] = 7.88° with z perpendicular to the surface and (red) expected temperature profile calculated by FEA.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 1| January 2021| Pages 91-103
https://doi.org/10.1107/S1600577520014009
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