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Negative streamer development in FEP teflonA computational model is developed which describes the evolution and propagation of an ionizing front (negative streamer) in solid materials. The ionization front consists of drifting avalanching electrons moving self-consistently under the influence of their own space-charge field together with an applied external field. The required input information for the model consists of the functional dependence of the macroscopic transport coefficients on the local electric field, the initial conditions for beginning the calculation, and the strength of the applied field. A computational approach for specifying the transport coefficients and initional conditions is also described. The approach has been implemented by constructing three computer codes which sequentially interface, beginning with single electron scattering, and ending with streamer development. Computational results are presented for model calculations in Teflon. The overall model is perceived to provide a picture of the initiation phase of a propagating discharge in electron-irradiated dielectrics.
Document ID
19800035606
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Beers, B. L.
(Science Applications, Inc. Vienna, VA, United States)
Pine, V. W.
(Science Applications, Inc. Vienna, VA, United States)
Hwang, H. C.
(Science Applications, Inc. Vienna, VA, United States)
Bloomberg, H. W.
(Science Applications, Inc. Radiation and Electromagnetics Div., Vienna, Va., United States)
Date Acquired
August 10, 2013
Publication Date
December 1, 1979
Subject Category
Solid-State Physics
Accession Number
80A19776
Funding Number(s)
CONTRACT_GRANT: NAS3-21378
Distribution Limits
Public
Copyright
Other

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