Fabrication of transmission gratings for use in cosmic X-ray and XUV astronomy

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cosmic X Rays, Far Ultraviolet Radiation, Gratings (Spectra), Ultraviolet Astronomy, X Ray Astronomy, Electroplating, Fabrication, Mechanical Properties, Optical Properties, Photolithography, X Ray Spectroscopy

Scientific paper

The manufacturing process for open transmission gratings with high efficiency and high line density is described. This process involves two steps: mechanical ruling of the original master and photochemical replication of the individual grating facets. A free-standing transmission grating is added by a regular support structure obstructing about one-third of the grating area. For application in space astronomy, gratings have been subjected to vibration and acoustic-noise tests.

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