Sagittally focusing diffractive-refractive x-ray lens with a large acceptance and a long focusing distance

Nikolay Artemiev; Jaromir Hrdy; Thierry Bigault; Joanna Hoszowska; Sergey Peredkov

doi:10.1117/12.504730

23 December 2003 Sagittally focusing diffractive-refractive x-ray lens with a large acceptance and a long focusing distance

Nikolay Artemiev, Jaromir Hrdy, Thierry Bigault, Joanna Hoszowska, Sergey Peredkov

Author Affiliations +

Proceedings Volume 5195, Crystals, Multilayers, and Other Synchrotron Optics; (2003) https://doi.org/10.1117/12.504730
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

Nikolay Artemiev, Jaromir Hrdy, Thierry Bigault, Joanna Hoszowska, and Sergey Peredkov "Sagittally focusing diffractive-refractive x-ray lens with a large acceptance and a long focusing distance", Proc. SPIE 5195, Crystals, Multilayers, and Other Synchrotron Optics, (23 December 2003); https://doi.org/10.1117/12.504730

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