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Measurement of the spatial coherence function of undulator radiation using a phase mask
J J A Lin1, D Paterson, A G Peele
1School of Physics, University of Melbourne, Victoria 3010, Australia.
Physical Review Letters
|March 14, 2003
Abstract:
A measurement of the horizontal coherence function of 7.9 keV radiation from an undulator beam line at the Advanced Photon Source is reported. X-ray diffraction from a phase-shifting mask was used, and the coherence function was measured as a function of the width of beam-conditioning slits in the beam line. The coherence distribution is found to be best described by a Lorentzian function.