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Investigations of radiation-induced and carrier-enhanced conductivityA steady-state carrier computer code, PECK (Parker Enhanced Carrier Kinetics), that predicts the radiation-induced conductivity (RIC) produced in a dielectric by an electron beam was developed. The model, which assumes instantly-trapped holes, was then applied to experimental measurements on thin Kapton samples penetrated by an electron beam. Measurements at high bias were matched in the model by an appropriate choice for the trap-modulated electron mobility. A fractional split between front and rear currents measured at zone bias is explained on the basis of beam-scattering. The effects of carrier-enhanced conductivity (CEC) on data obtained for thick, free-surface Kapton samples is described by using an analytical model that incorporates field injection of carriers from the RIC region. The computer code, LWPCHARGE, modified for carrier transport, is also used to predict partial penetration effects associated with CEC in the unirradiated region. Experimental currents and surface voltages, when incorporated in the appropriate models, provide a value for the trap modulated mobility that is in essential agreement with the RIC results.
Document ID
19850014204
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Meulenberg, A., Jr.
(Communications Satellite Corp. Clarksburg, MD, United States)
Parker, L. W.
(Parker (Lee W.), Inc., Concord Mass., United States)
Yadlowski, E. J.
(H-Y Tek Corp. Radford, Va., United States)
Hazelton, R. C.
(H-Y Tek Corp. Radford, Va., United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1985
Publication Information
Publication: NASA. Lewis Research Center Spacecraft Environ. Interactions Technol., 1983
Subject Category
Electronics And Electrical Engineering
Accession Number
85N22515
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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