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Proceedings Paper

Fresnel diffraction experiments using coherent x rays
Author(s): Jose Baruchel; Peter Cloetens; Jean-Pierre Guigay; Michel Schlenker
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Paper 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.

Paper Details

Date Published: 19 July 1999
PDF: 2 pages
Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.354844
Show Author Affiliations
Jose Baruchel, European Synchrotron Radiation Facility (France)
Peter Cloetens, European Synchrotron Radiation Facility and Univ. of Antwerp (France)
Jean-Pierre Guigay, European Synchrotron Radiation Facility and CNRS (France)
Michel Schlenker, European Synchrotron Radiation Facility and Lab. Louis Neel (France)

Published in SPIE Proceedings Vol. 3749:
18th Congress of the International Commission for Optics
Alexander J. Glass; Joseph W. Goodman; Milton Chang; Arthur H. Guenther; Toshimitsu Asakura, Editor(s)

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