Grazing-Incidence Optics For Synchrotron-Radiation Insertion-Device Beams

Victor Rehn

doi:10.1117/12.964362

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21 October 1986 Grazing-Incidence Optics For Synchrotron-Radiation Insertion-Device Beams

Victor Rehn

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Proceedings Volume 0640, Grazing Incidence Optics; (1986) https://doi.org/10.1117/12.964362
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States

Abstract

The reduction of scattering, especially near-specular scattering, constitutes one of the major challenges to the grazing-incidence optics community for either x-ray astronomy or synchrotron-radiation applications. In this paper, the theoretical predictions of angular scattering by microfacets in the surface (facet-model scattering), and by diffraction from surface microirregularities (diffractive-model scattering) are examined. The differences between these two theories is discussed for the case of grazing-incidence optics. By using a simple normalization to minimize the effects of the approximations made in the first-order diffractive-scattering theory, three approximate scaling or invariance rules are derived for the near-specular angular distribution of scattering. If verified experimentally, these rules will facilitate the extrapolation of near-specular angular scattering from one set of operational conditions to another.

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Victor Rehn "Grazing-Incidence Optics For Synchrotron-Radiation Insertion-Device Beams", Proc. SPIE 0640, Grazing Incidence Optics, (21 October 1986); https://doi.org/10.1117/12.964362

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