Measurement of the Spatial Coherence Function of Undulator Radiation using a Phase Mask Academic Article uri icon


  • 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.


  • Lin, JJA
  • Paterson, D
  • Peele, AG
  • McMahon, PJ
  • Chantler, CT
  • Nugent, KA
  • Lai, B
  • Moldovan, N
  • Cai, Z
  • Mancini, DC
  • McNulty, I

publication date

  • January 1, 2003