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Proceedings Paper

Influence of crystal surface roughness on the angular spread of x-ray diffracted beam
Author(s): Jaromira Hrda; Jaromir Hrdy; Olivier Hignette; Joanna Hoszowska
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Paper Abstract

One of the factors influencing the focus size in diffractive-refractive optics is the quality of diffracting surface. If the surface is uneven, then the diffraction at each point of the surface is a combination of an asymmetric and inclined diffraction (general asymmetric diffraction). This somewhat deviates and spreads the diffracted beam. The integration over the surface hit by an incident beam gives the angular spread of the diffracted beam. It is shown that in some cases (highly asymmetric, highly inclined cut) the etched surface may create the spread of the diffracted beam, such that it causes a significant broadening of the focus. In this case a mechanical-chemical polishing is necessary.

Paper Details

Date Published: 23 December 2003
PDF: 6 pages
Proc. SPIE 5195, Crystals, Multilayers, and Other Synchrotron Optics, (23 December 2003); doi: 10.1117/12.505553
Show Author Affiliations
Jaromira Hrda, Institute of Physics (Czech Republic)
Jaromir Hrdy, Institute of Physics (Czech Republic)
Olivier Hignette, European Synchrotron Radiation Facility (France)
Joanna Hoszowska, European Synchrotron Radiation Facility (France)

Published in SPIE Proceedings Vol. 5195:
Crystals, Multilayers, and Other Synchrotron Optics
Tetsuya Ishikawa; Albert T. Macrander; James L. Wood, Editor(s)

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