TY  - JOUR
A1  - Panzner, Tobias
A1  - Gleber, Gudrun
A1  - Sant, Tushar
A1  - Leitenberger, Wolfram
A1  - Pietsch, Ullrich
T1  - Coherence experiments at the white-beam beamline of BESSYI
N2  - The third-generation X-ray source BESSYII (Berlin, Germany) provides coherent X-ray radiation which can be used for static and dynamic speckle analysis. Recently we have demonstrated that one can perform experiments with coherent white radiation provided by a bending magnet (5 < E < 20 keV). In this paper we show that the diffraction figure of the initial pinhole must be considered for the interpretation of coherent experiments. The reflectivity spectrum of a sample results from the Fresnel diffraction of the incident pinhole deformed by the static speckle features of the sample surface. For dynamical experiments all speckle like features alter with time whereas the pure Fresnel fringes remain constant. (c) 2007 Published by Elsevier B.V.
Y1  - 2007
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/32403
UR  - http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TW0-4N08M4P-1- F&_cdi=5548&_user=1584062&_orig=search&_coverDate=05%2F23%2F2007&_sk=994849985&view=c&wchp=dGLbVzW- zSkWA&md5=3a09375f874dccd9b382488e9d0
ER  -