Abstract
Scatter centers common to protected silver have been investigated on a variety of space flight quality mirrors. The defects have been characterized as to number density, size, location within the film layer structure, and dependence on illumination angle. In addition the total integrated scatter values as a function of wavelength, humidity test soak time, and temperature have been determined for some mirrors. These submicrometer sized defects are believed to be the precursors of silver corrosion spots. A mechanism for their generation is proposed, and measures to reduce their occurrence are suggested.
© 1980 Optical Society of America
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