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Dielectric surface discharges: Effects of combined low-energy and high-energy incident electronsDielectric surface discharges affected by the addition of high energy electrons at 5 pA/sq cm to a primary 20 keV, 10 nA/sq cm electron beam with the high energy broad spectrum particles coming from the beta decay of Strontium 90 are studied. Kapton exhibits significantly increased discharge strength, increased waiting time between discharges, and a decreased number of discharges per specimen before discharge cessation. Mylar exhibits similar but less pronounced effects, while Teflon is relatively unaffected. With Kapton and Mylar, the high energy electrons act in some way to delay the instant of discharge ignition so that more charge can be accumulated and hence released during discharge.
Document ID
Document Type
Conference Paper
Balmain, K. G.
(Toronto Univ. Ontario)
Hirt, W.
(Toronto Univ. Ontario)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Publication Information
Publication: NASA. Lewis Research Center Spacecraft Charging Technol., 1980
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
Funding Number(s)
Distribution Limits
Work of the US Gov. Public Use Permitted.

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