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Monochromators
Monochromators are artificial optical components with a 1-dimensional lattice deposited on a substrate. These optical devices monochromize the incoming beam.
They generate a divergent monochromatic beam, which is an imagination of the X-ray source. Due to the angular band width of the BRAGG reflection a collimation is observed.
To obtain high efficiency, the d-spacing of the lattice is constant from the front end to the rear end of the monochromator. A plane figure is required for the monochromator.
Monochromatization of X-rays by means of a nanometer multilayer stack
Reflectivity of a Ni/C multilayer (d = 4.0 nm) in the spectral range between 8 keV ... 70 keV (Measurement: G. Falkenberg, Hasylab at DESY, Hamburg, Germany)
Spectral range < 100 eV - 100 keV
Material systems optimized on wavelength, on customers request
Dimensions up to 6" diameter (LA-PLD), others on request
Resolution D E/E ≈ 0,25 %
Thickness homogeneity Dd/d < 1%
Applications monochromators on laboratory X-ray sources and on synchrotrons, optimized for high reflectivity or tailored resolution