Bragg-Fresnel optics (BFO) has been developed in IMT RAS for more than 10 years already [1]. The operation of BFO is based on the combination of two kinds of diffraction: Bragg diffraction of hard X-ray radiation on a perfect single crystal or a multilayer interference mirror and Fresnel diffraction on an artificially created microstructure. At present, BFO is the only instrument of X-radiation focusing in a wide range (up to 100 keV) with a space resolution to 0.1 micron. BFO is used in a number of techniques of X-ray diagnostics and as the basis for the development of new instruments. Bragg-Fresnel lenses successfully tested with use any of synchrotron radiation sources in Russia (Novosibirsk, VEPP-2M), Germany (Hamburg, HASILAB; Berlin, DESY, DORIS), Japan (Tsukuba, Photon Factory), and France (Grenoble, ESRF; Paris, LURE).
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