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Proceedings Paper

Sagittally focusing diffractive-refractive x-ray lens with a large acceptance and a long focusing distance
Author(s): Nikolay Artemiev; Jaromir Hrdy; Thierry Bigault; Joanna Hoszowska; Sergey Peredkov
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Paper Abstract

The high resolution, high asymmetric diffractive-refractive x-ray lens was tested at BM5 beamline in ESRF. The lens consists of two Si (111) channel-cut crystals in dispersive arrangement with the angle of asymmetry of 12.7°. The channels have a circular profile with the diameter of 22 mm. The test was performed for the energy of 7.8 - 8.1 keV and the focusing distance of 19 - 20 m. At the place of the focus the beam was squeezed horizontally from 8.8 mm (unfocused beam) to 0.4 mm, i.e. more than 20 times. To get a good reflectivity in such a highly asymmetric diffraction, the cylindrical surface had to be mechanically-chemically polished.

Paper Details

Date Published: 23 December 2003
PDF: 5 pages
Proc. SPIE 5195, Crystals, Multilayers, and Other Synchrotron Optics, (23 December 2003); doi: 10.1117/12.504730
Show Author Affiliations
Nikolay Artemiev, Institute of Physics (Czech Republic)
Jaromir Hrdy, Institute of Physics (Czech Republic)
Thierry Bigault, European Synchrotron Radiation Facility (France)
Joanna Hoszowska, European Synchrotron Radiation Facility (France)
Sergey Peredkov, Lund Univ. (Sweden)

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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