Abstract

We report measurements of reflection efficiencies from 44 Å to 1048 Å for samples of polished nickel, diamond-turned aluminum, and various thicknesses of gold evaporated onto the nickel and aluminum samples. The reflection efficiencies are presented for grazing angles from 5° to 75°. For wavelengths longer than ~100 Å, the gold-coated nickel surface provides the highest efficiencies, while for wavelengths shorter than 100 Å the nickel is superior. The optimal thickness of gold is found to be ~500 Å. The performance of grazing incidence optics using nickel and aluminum substrates for an evaporated gold surface is discussed.

© 1978 Optical Society of America

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