title: A proof-of-principle experiment of a novel harmonics separation optics for synchrotron facilities.
abstract: 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.
authors.affiliation: Institute of Physics, Academy of Sciences of the Czech Republic, vvi, Praha 8, Czech Republic. oberta@fzu.cz
authors.forename: P
authors.initials: P
authors.lastname: Oberta
authors.forename: J
authors.initials: J
authors.lastname: Hrdý
authors.forename: P
authors.initials: P
authors.lastname: Mikulík