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APS » Journals » Phys. Rev. Lett. » Volume 90 » Issue 7
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Phys. Rev. Lett. 90, 074801 (2003) [4 pages]

Measurement of the Spatial Coherence Function of Undulator Radiation using a Phase Mask

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J. J. A. Lin, D. Paterson, A. G. Peele, P. J. McMahon, C. T. Chantler, and K. A. Nugent
School of Physics, University of Melbourne, Victoria 3010, Australia

B. Lai, N. Moldovan, Z. Cai, D. C. Mancini, and I. McNulty
Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439

Received 23 July 2002; published 20 February 2003

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.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.074801
DOI:
10.1103/PhysRevLett.90.074801
PACS:
41.60.Ap, 41.50.+h, 42.25.Kb
 
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