Ray tracing - ESRF

Diffraction & Coherence II
Fraunhofer diffraction after a symmetrical/asymmetrical crystal
The conservation and propagation of transversal coherence can be studied from the visibility of the diffraction patterns
Example: Degradation of the transversal coherence when using asymmetric crystal (which produce chromatic aberrations)
[S. Brauer et al., J. Synchr. Rad. 2 (1995) 163]
Si 111, α=0, α=0.15 deg
8 keV, ΔE~ 1 eV
Manuel Sánchez del Río
α=0
8000.0eV
8000.5 eV
Ray tracing simulations for crystal optics (22 of 23)
α=0.15 deg
SPIE, July 22, 1998