Two-Dimensional X-Ray Beam Phase Sensing

Sébastien Bérujon, Eric Ziegler, Roberto Cerbino, Luca Peverini
2012 Physical Review Letters  
We present a new method to analyze quantitatively the wave front of a partially coherent x-ray beam. The technique is based on the use of two-dimensional speckle patterns combined with digital image correlation algorithms and offers a pixel size resolution, a high accuracy, and a reduced sensitivity to mechanical vibrations thanks to a very simple setup. The requirements on transverse and longitudinal coherence are also low. Finally, we show how the method can be used for phase contrast imaging
more » ... se contrast imaging applications by a single sample exposure process.
doi:10.1103/physrevlett.108.158102 pmid:22587288 fatcat:3sgdwpschfaprfzm4djbykama4