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Cryogenic quartz crystal microbalanceA radiatively cooled Cryogenic Quartz Crystal Microbalance designed to monitor highly volatile contaminants on the shuttle is described. Measurements are made with two 15-MHz microbalances having removable, optically polished sensors mounted in a radiant cooler. One sensor operates below the freezing point of water and monitors contamination including that of water vapor. The second sensor is heated and monitors the contamination background. It provides a reference from which the density of the water vapor cloud enveloping the shuttle is determined. The design incorporates a low-power dissipation oscillator, heaters for ice removal, and a method for attaching second-surface mirrors to the radiator employing an indium type solder instead of a room temperature vulcanizer.
Document ID
19760004053
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mckeown, D. (Faraday Labs., Inc. La Jolla, CA, United States)
Sonnenschein, G. (Faraday Labs., Inc. La Jolla, CA, United States)
Fox, M. G. (Faraday Labs., Inc. La Jolla, CA, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: NASA. Goddard Space Flight Center 8th Conf. on Space Simulation
Subject Category
Research And Support Facilities (Air)
Report/Patent Number
PAPER-29
Accession Number
76N11141
Funding Number(s)
CONTRACT_GRANT: NAS8-31110
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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