Diffractive-refractive optics: (+,-,-,+) X-ray crystal monochromator with harmonics separation

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Authors

HRDÝ J. MIKULÍK Petr OBERTA P.

Year of publication 2011
Type Article in Periodical
Magazine / Source Journal of Synchrotron Radiation
MU Faculty or unit

Faculty of Science

Citation
Web http://scripts.iucr.org/cgi-bin/paper?S0909049510049204
Doi http://dx.doi.org/10.1107/S0909049510049204
Field Solid matter physics and magnetism
Keywords x-ray optics; x-ray diffraction; synchrotron radiation; monochromators
Description A new kind of two channel-cut crystals X-ray monochromator in dispersive (+,-,-,+) position which spatially separates harmonics is proposed. The diffracting surfaces are oriented so that the diffraction is inclined. Owing to refraction the diffracted beam is sagittally deviated. The deviation depends on wavelength and is much higher for the first harmonics than for higher harmonics. This leads to spatial harmonics separation. The idea is supported by ray-tracing simulation.
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