Measurement of the spatial coherence function of undulator radiation using a phase mask.
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
J J A
JJ
School of Physics, University of Melbourne, Victoria 3010, Australia.
Paterson
D
D
Peele
A G
AG
McMahon
P J
PJ
Chantler
C T
CT
Nugent
K A
KA
Lai
B
B
Moldovan
N
N
Cai
Z
Z
Mancini
D C
DC
McNulty
I
I