Diffraction grating transmission efficiencies for XUV and soft X rays

Details Diffraction grating transmission efficiencies for XUV and soft X rays Diffraction grating transmission efficiencies for XUV and soft X rays

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apopt..16.1088s&link_type=abstract

Applied Optics, vol. 16, Apr. 1977, p. 1088-1091. ERDA-supported research

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Applications

36

Far Ultraviolet Radiation, Gratings (Spectra), Spaceborne Astronomy, Transmission Efficiency, X Ray Diffraction, Electrodeposition, Fabrication, Gold Coatings, Heao, Laser Applications

Scientific paper

The manufacture and properties of a grating intended for extrasolar X-ray studies are described. The manufacturing process uses a split laser beam exposing an interference pattern on the photoresist-coated glass plated with a nickel parting layer. The grating, supporting structure, and mounting frame are electrodeposited on the nickel parting layer, and the final product is lifted from the glass substrate by selective etching of the nickel. A model was derived which relates the number of counts received in a given order m as a function of photon wavenumber. A 4-deg beam line was used to measure the efficiencies of gold transmission gratings for diffraction of X-rays in the range of 45 to 275 eV. The experimental results are in good agreement with model calculations.

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