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Title: The Decay of Space Charge in a Glassy Epoxy Resin following Voltage Removal.
Authors: Dissado, Len A.
Griseri, Virginie
Peasgood, William
Cooper, Elizabeth S.
Fukunaga, Kaori
Fothergill, John C.
First Published: Aug-2006
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Citation: IEEE Transactions on Dielectrics and Electrical Insulation, 2006, 13 (4), pp. 903-916.
Abstract: The PEA technique is used to measure the distribution of space charge in an epoxy resin after polarisation for one week at an applied field of 7.14kV/mm over a range of temperatures. The decay of the space charge is followed for times up to 114 hours after removal of the voltage and analysed in terms of a number of alternative decay mechanisms. It is shown that the rate-determining stage of the decay mechanism is that of a thermally activated process that has been associated with charge de-trapping. At times greater than 102s the de-trapping process behaves as though the space charge field does not exist and the retention time of the space charge depends only upon the depth of the deepest occupied traps and the temperature.
DOI Link: 10.1109/TDEI.2006.1667752
ISSN: 1070-9878
Type: Article
Rights: This is the author's final draft of the paper published as IEEE Transactions on Dielectrics and Electrical Insulation, 2006, 13 (4), pp. 903-916. Copyright © 2006 IEEE. The final version is available from Doi: 10.1109/TDEI.2006.1667752. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Leicester’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
Appears in Collections:Published Articles, Dept. of Engineering

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