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Results of apparent atomic oxygen reactions on Ag, C, and Os exposed during the Shuttle STS-4 orbits (1983)

Linton, R. C. ; Peters, P. N. ; Miller, E. R.

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Publication Date: 2011-08-18

Description: Films selected for anticipated reaction with atomic oxygen, namely carbon, silver, and osmium, were exposed during the Shuttle STS-4 mission. A silver film within 5 nm of 225 nm thick was converted to a transparent blue-green interference film within 5 nm of 355 nm thick. Both carbon and osmium films 10-30 nm thick apparently formed volatile oxides and disappeared, except where well shielded. A calculated total of approximately 7 x 10 to the 19th oxygen atoms per sq cm struck the surfaces, which could have removed on the order of 3 microns of material if only 10 percent reacted. The absence of apparent effects on adjacent thin and thick gold films is offered as evidence that sputtering is not responsible.

Keywords: INORGANIC AND PHYSICAL CHEMISTRY

Type: Geophysical Research Letters (ISSN 0094-8276); 10; July 198

Format: text

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