Submicrometer hard X-ray focusing using a single-bounce ellipsoidal capillary combined with a Fresnel zone plate

A single‐bounce capillary with an ellipsoidal shape has been used for two‐step focusing in combination with a Fresnel zone plate (FZP). The FZP serves as a first microfocusing element and produces a demagnified micrometer image of the source, before the elliptical capillary makes a last final compre...

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Bibliographic Details
Published in:Journal of synchrotron radiation 2007-03, Vol.14 (2), p.227-228
Main Authors: Erko, A., Bjeoumikhov, A., Erko, M., Yunkin, V., Snigireva, I., Grigoriev, M., Snigirev, A., Bjeoumikhova, S.
Format: Article
Language:English
Subjects:
Fresnel zone plate
hard X-ray focusing
single-bounce capillary
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Summary:A single‐bounce capillary with an ellipsoidal shape has been used for two‐step focusing in combination with a Fresnel zone plate (FZP). The FZP serves as a first microfocusing element and produces a demagnified micrometer image of the source, before the elliptical capillary makes a last final compression of the beam. With 15 keV X‐rays from the European Synchrotron Radiation Facility BM5 bending magnet, the two‐step demagnification system produced a focus of about 250 nm with a gain of more than 1000. The use of an ellipsoidal capillary as a micro‐mirror under off‐axis illumination using micro‐prefocusing optics might open up new opportunities in nanofocusing developments.
ISSN:1600-5775
0909-0495
1600-5775
DOI:10.1107/S0909049507004050