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study of factors determining the radiation sensitivity of quartz crystal oscillators (ao189)Quartz resonators fabricated from two different grades of quartz material and selected for their susceptibility to radiation damage as determined by transmission electron microscopy (TEM), were tested prior to the LDEF flight. These resonators were then flown on the LDEF mission where they were exposed to the radiation environment of low Earth orbit. Post-flight tests were then conducted to determine any differences in resonator performance caused by the space exposure. Results of the TEM analysis of the quartz material and preflight and postflight measurements of the flight resonators and of the space and ground based control resonators are presented. Further planned work on the TEM analysis of the quartz materials will also be outlined.
Document ID
19910015768
Document Type
Conference Paper
Authors
Ahearn, J. S.
(Martin Marietta Labs. Baltimore, MD, United States)
Venables, J. D.
(Martin Marietta Labs. Baltimore, MD, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA, Langley Research Center, First LDEF Post-Retrieval Symposium Abstracts
Subject Category
NONMETALLIC MATERIALS
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19910015658Analytic PrimaryFirst LDEF Post-Retrieval Symposium abstracts