Fresnel diffraction experiments using coherent x rays

Jose Baruchel; Peter Cloetens; Jean-Pierre Guigay; Michel Schlenker

doi:10.1117/12.354844

19 July 1999 Fresnel diffraction experiments using coherent x rays

Jose Baruchel, Peter Cloetens, Jean-Pierre Guigay, Michel Schlenker

Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354844
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States

Abstract

The new third-generation synchrotron facilities, which are in operation since a few years, provide X ray beams of high intensity, of small angular aperture (of the order of 0. 1 mrad) and high coherence properties, in comparison to more conventional X-ray sources. On some beamlines, the distance from the source to the object may be very large ; this distance is 150 meters on the 1D19 beamline at the ESRF; taking into account the source size s —50 and 150 im in the vertical and in the horizontal directions respectively, we obtain, for a wavelength = 1 A, a transverse vertical coherence length of 300 im and an horizontal one of 100 jim. By using a perfect crystal monochromator, a quasimonochromatic beam, with a relative wavelength spread A7J? iO ,is obtained.

Citation Download Citation

Jose Baruchel, Peter Cloetens, Jean-Pierre Guigay, and Michel Schlenker "Fresnel diffraction experiments using coherent x rays", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); https://doi.org/10.1117/12.354844

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