ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The investigation results on details of the imaging by Bragg-Fresnel lens (BFL) in white spectrum of synchrotron radiation are presented. BFL was fabricated on a silicon single crystal with the reflecting plane (III) by the methods of microlithography and plasma-chemical etching. The relief depth of the zone structure was 3 μm, the last zone was 0.5 μm in size, the total width of the zone plate was 200 μm. The superconducting wiggler installed at the storage ring VEPP-2M was used as a source of synchrotron radiation. The experimental results on the radiation focusing at different wavelengths (λ=1÷2.5 A(ring)) were obtained. The results include the focusing both in- and outside the focal plane of the zone plate. The results are also presented on an observation of the focusing in antibragg diffraction geometry when the orientation of Fresnel zones coincides with the vertical section of initial incident beam of radiation. The obtained results are treated analytically.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1140711
