A proof-of-principle experiment of a novel harmonics separation optics for synchrotron facilities

A proof‐of‐principle experiment of a novel harmonics separation optics for synchrotron facilities is presented. The harmonic separator is a Si crystal cut in an inclined geometry in which the impinging beam undergoes a diffractive–refractive effect owing to the dispersive nature of X‐ray refraction....

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Bibliographic Details
Published inJournal of synchrotron radiation Vol. 19; no. 6; pp. 1012 - 1014
Main Authors Oberta, P., Hrdý, J., Mikulík, P.
Format Journal Article
LanguageEnglish
Published 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.11.2012
John Wiley & Sons, Inc
Subjects
Beams (radiation)
Diffraction
diffractive-refractive optics
Experiments
Harmonics
harmonics separation
higher order
inclined geometry
Refraction
Separation
Separators
Spots
Synchrotrons
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Summary:A proof‐of‐principle experiment of a novel harmonics separation optics for synchrotron facilities is presented. The harmonic separator is a Si crystal cut in an inclined geometry in which the impinging beam undergoes a diffractive–refractive effect owing to the dispersive nature of X‐ray refraction. A polychromatic beam containing higher‐order energies is spatially separated behind the separator into individual monochromatic diffraction spots. A synchrotron experiment at a bending‐magnet beamline with 7 keV fundamental energy is presented. The spot of the third‐order harmonic of 21 keV is deviated from the fundamental by 0.35 mm at a distance 1 m behind the device.
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ISSN:1600-5775
0909-0495
1600-5775
DOI:10.1107/S0909049512036618