Progress on single crystal beryllium windows

A. Khounsary; B. Lai; A. Rack; S. Goto; O. Chubar; T. Weitkamp

doi:10.1117/12.895391

28 September 2011 Progress on single crystal beryllium windows

A. Khounsary, B. Lai, A. Rack, S. Goto, O. Chubar, T. Weitkamp

Proceedings Volume 8139, Advances in X-Ray/EUV Optics and Components VI; 813914 (2011) https://doi.org/10.1117/12.895391
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

A. Khounsary, B. Lai, A. Rack, S. Goto, O. Chubar, and T. Weitkamp "Progress on single crystal beryllium windows", Proc. SPIE 8139, Advances in X-Ray/EUV Optics and Components VI, 813914 (28 September 2011); https://doi.org/10.1117/12.895391

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