LIMM study of space charge in crosslinked polyethylene

T. Pawlowski, R. J. Fleming, S. B. Lang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Electric field / space charge profiles obtained using the laser-intensity-modulation-method (LIMM) are presented for XLPE samples extracted from power cable insulation cross-linked using dicumyl peroxide. The samples, 110 μm thick with vacuum-evaporated aluminium electrodes, were subjected to dc fields of 48 kV/mm and both polarities at room temperature for at least 24 hr. The LIMM measurements were made at room temperature, and at various times after the end of poling. Electric field and space charge profiles obtained using the scale-transformation and polynomial regularization methods were in fair quantitative agreement, except occasionally near the electrodes. Most of the space charge was concentrated near the electrodes, with densities of order 5-10 C m-3 in those regions. Charge of the same sign tended to accumulate adjacent to a given physical electrode, for both poling polarities.

Original languageEnglish
Title of host publication2005 12th International Symposium on Electrets, ISE 12 - Proceedings
Pages196-199
Number of pages4
StatePublished - 1 Dec 2005
Event2005 12th International Symposium on Electrets, ISE 12 - Salvador, Bahia, Brazil
Duration: 11 Sep 200514 Sep 2005

Publication series

NameProceedings - International Symposium on Electrets
Volume2005

Conference

Conference2005 12th International Symposium on Electrets, ISE 12
Country/TerritoryBrazil
CitySalvador, Bahia
Period11/09/0514/09/05

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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