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Figure 2
WG optical design: simulated modal functions |um(z)|2, attenuation length lm and achievable transmission T. (a–d) upper panel: mode intensity distribution for d = 50 nm; lower panel: attenuation length lm(d) as a function of d, for photon energy (a) E = 7 keV, (b) E = 12 keV for Si cladding, and (c) E = 8 keV, (d) E = 11 keV for Ge cladding. The different colors show the respective modes m. (e–f) Modal transmission T0 of the fundamental mode m = 0, as a function of d and Tm/Tc = Mathematical equation for (e) Si, (f) Ge. The colors (see color bar) encode the transmission T0.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 2| March 2026| Pages 298-313
https://doi.org/10.1107/S1600577525011567
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