Effects of long term space environment exposure on optical substrates and coatings (S0050-2)

Details Effects of long term space environment exposure on optical substrates and coatings (S0050-2) Effects of long term space environment exposure on optical substrates and coatings (S0050-2)

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ldef.symp.1389h&link_type=abstract

In NASA. Langley Research Center, LDEF: 69 Months in Space. Part 4: Second Post-Retrieval Symposium p 1389-1397 (SEE N93-29682 1

Computer Science

Aerospace Environments, Antireflection Coatings, Long Duration Exposure Facility, Optical Materials, Radiation Effects, Contaminants, Meteorite Collisions, Radiation Dosage, Silica Glass

Scientific paper

Eastman Kodak Company included twelve substrate and coating samples on the Long Duration Exposure Facility (LDEF) structure. There were three Fused Silica and three Ultra Low Expansion (ULE) uncoated glass samples, two ULE samples with a high reflectance silver coating, two Fused Silica samples with an antireflectance coating, and two Fused silica samples with a solar rejection coating. A set of duplicate control samples was also manufactured and stored in a controlled environment for comparison purposes. Kodak's samples were included as a subset of the Georgia Institute of Technology tray, which was located on row 5-E, tray S0050-2. This placed the samples on the trailing edge of the structure, which protected them from the effects of atomic oxygen bombardment. An evaluation of the flight samples for effects from the 5 year mission showed that a contaminant was deposited on the samples, a micrometeoroid impact occurred on one of the samples, and the radiation darkening which was expected for the glass did not occur. The results are listed in more detail.

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