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Charging and discharging characteristics of dielectric materials exposed to low- and mid-energy electronsCharging and discharging characteristics of dielectric samples exposed to 1-25 keV and 25-100 keV electrons in a laboratory environment are reported. The materials examined comprised OSR, Mylar, Kapton, perforated Kapton, and Alphaquartz, serving as models for materials employed on spacecraft in geosynchronous orbit. The tests were performed in a vacuum chamber with electron guns whose beams were rastered over the entire surface of the planar samples. The specimens were examined in low-impedance-grounded, high-impedance-grounded, and isolated configurations. The worst-case and average peak discharge currents were observed to be independent of the incident electron energy, the time-dependent changes in the worst case discharge peak current were independent of the energy, and predischarge surface potentials are negligibly dependent on incident monoenergetic electrons.
Document ID
19830036282
Document Type
Reprint (Version printed in journal)
Authors
Coakley, P.
(JAYCOR San Diego, CA, United States)
Kitterer, B.
(JAYCOR San Diego, CA, United States)
Treadaway, M.
(JAYCOR San Diego, CA, United States)
Date Acquired
August 11, 2013
Publication Date
December 1, 1982
Subject Category
Nonmetallic Materials
Accession Number
83A17500
Distribution Limits
Public
Copyright
Other

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