Transmission grating efficiencies for wavelengths between 5.4 A and 44.8 A

Details Transmission grating efficiencies for wavelengths between 5.4 A and 44.8 A Transmission grating efficiencies for wavelengths between 5.4 A and 44.8 A

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apopt..18..368b&link_type=abstract

Applied Optics, vol. 18, Feb. 1, 1979, p. 368-373.

Computer Science

Performance

16

Astronomical Spectroscopy, Gratings (Spectra), Grist (Telescope), Spectroscopic Telescopes, Ultraviolet Spectroscopy, X Ray Spectroscopy, Gold, Line Spectra, Performance Tests, System Effectiveness, Ultraviolet Astronomy, X Ray Astronomy

Scientific paper

Diffraction efficiencies of 44.8-5.4-A X rays by a free-standing gold transmission grating of 1.0-micron period have been measured, using characteristic line radiation. Partial transparency of the grating affects the efficiency at the shorter wavelengths and causes an increase in the efficiencies for orders m not less than 1 over the long-wavelength values. Model calculations for a trapezoidal wire cross section are in good agreement with the measured efficiencies and allow the wire cross section to be determined. Gratings of this type have a high efficiency for wavelengths as short as 5 A and are, therefore, well suited for applications both in X-ray and extreme UV astronomy

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