Spatial coherence determination from the Fourier analysis of a resonant soft X-ray magnetic speckle pattern.
We present a method to determine the two-dimensional spatial coherence of synchrotron radiation in the soft X-ray regime by analyzing the Fourier transform of the magnetic speckle pattern from a ferromagnetic film in a multidomain state. To corroborate the results, a Young's double-pinhole experiment has been performed. The transverse coherence lengths in vertical and horizontal direction of both approaches are in a good agreement. The method presented here is simple and gives a direct access to the coherence properties of synchrotron radiation without nanostructured test objects.
Kai
K
Bagschik
Robert
R
Frömter
Leonard
L
Müller
Wojciech
W
Roseker
Judith
J
Bach
Philipp
P
Staeck
Carsten
C
Thönnißen
Stefan
S
Schleitzer
Magnus Hårdensson
MH
Berntsen
Christian
C
Weier
Roman
R
Adam
Jens
J
Viefhaus
Claus Michael
CM
Schneider
Gerhard
G
Grübel
Hans Peter
HP
Oepen