Open AccessDiffractive–refractive optics: (+,−,−,+) X‐ray crystal monochromator with harmonics separation
Author(s) -
Hrdý Jaromír,
Mikulík Petr,
Oberta Peter
Publication year - 2011
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049510049204
Subject(s) - harmonics , monochromator , optics , diffraction , physics , ray tracing (physics) , refraction , x ray optics , wavelength , crystal (programming language) , x ray , computer science , quantum mechanics , voltage , programming language
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.