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Proceedings Paper

Progress on single crystal beryllium windows
Author(s): A. Khounsary; B. Lai; A. Rack; S. Goto; O. Chubar; T. Weitkamp
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Paper Abstract

Fabrication of double-side-polished single-crystal beryllium foils for X-ray window applications were reported in an earlier paper. It was stipulated that unlike the conventional windows, polished single-crystal windows - nearly free from granular boundaries, voids, impurities, and inclusions - would essentially transmit an incident X-ray beam unaltered, except for a uniform attenuation. This paper reports on further X-ray characterization of these windows. Near- and far-field transmission images of the windows have been obtained, and the impact of the windows on the wave quality and coherence properties of the transmitted X-ray beam is demonstrated. Compared with conventional X-ray windows, single-crystal beryllium windows are shown to introduce significantly less artifacts in the transmitted beam but largely preserve coherence. The cause of sporadic and faint features in the transmitted images is discussed and wave optics computation is used to simulate some features.

Paper Details

Date Published: 28 September 2011
PDF: 5 pages
Proc. SPIE 8139, Advances in X-Ray/EUV Optics and Components VI, 813914 (28 September 2011); doi: 10.1117/12.895391
Show Author Affiliations
A. Khounsary, Argonne National Lab. (United States)
B. Lai, Argonne National Lab. (United States)
A. Rack, European Synchrotron Radiation Facility (France)
S. Goto, Japan Synchrotron Radiation Research Institute (Japan)
O. Chubar, Brookhaven National Lab. (United States)
T. Weitkamp, Synchrotron SOLEIL (France)

Published in SPIE Proceedings Vol. 8139:
Advances in X-Ray/EUV Optics and Components VI
Christian Morawe; Ali M. Khounsary; Shunji Goto, Editor(s)

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