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Proceedings Paper

Vacuum outgassing from diffuse-absorptive baffle materials
Author(s): Charles M. Egert; J. A. Basford
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Paper Abstract

Quantitative measurements of outgassing for Martin black and a variety of metallic, diffuse absorptive baffle materials under development for stray light management are reported here. Outgassing measurements were made during pumpdown from atmosphere at room temperature. Mass scans indicate water was the major outgassing species for all materials tested. Calibrated measurements of water vapor outgassing as a function of time were also made for each baffle material. Most baffle materials exhibited total water vapor outgassed during pumpdown of between 1 x 10 exp -5 and 4 x 10 exp -5 moles/sq cm. Plasma sprayed beryllium, currently under development exhibited approximately an order of magnitude lower total water vapor outgassed during pumpdown.

Paper Details

Date Published: 1 January 1991
PDF: 8 pages
Proc. SPIE 1330, Optical Surfaces Resistant to Severe Environments, (1 January 1991); doi: 10.1117/12.22639
Show Author Affiliations
Charles M. Egert, Oak Ridge National Lab. (United States)
J. A. Basford, Oak Ridge National Lab. (United States)


Published in SPIE Proceedings Vol. 1330:
Optical Surfaces Resistant to Severe Environments
Solomon Musikant, Editor(s)

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