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Hollow glass fibers can guide x rays because glancing-angle collisions with a smooth glass surface are highly reflective. Surface roughness decreases this reflectivity. We have developed relatively simple expressions for the effects of surface roughness on x-ray scattering, and we relate our results to the theoretical efficiency of x-ray lenses formed from bundles of hollow glass fibers.
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Kimball et al. (1993) studied this question.
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