Title :
Laser-intensity modulation method (LIMM)-an analytical and numerical modification
Author :
Das-Gupta, D.K. ; Hornsby, J.S.
Author_Institution :
Sch. of Electron. Eng. Sci., Wales Univ., Bangor, UK
fDate :
2/1/1991 12:00:00 AM
Abstract :
An analytical method that has been used with the laser intensity modulation technique for the determination of polarization and space-charge distributions in electrically stressed low-density polyethylene is described. A numerical method and data analysis are presented. In the analysis, a specific model of spatial distributions of space charge and polarization has been assumed that appears to provide reasonable agreement between the experimentally observed and the expected results
Keywords :
charge measurement; dielectric polarisation; measurement by laser beam; organic insulating materials; polarimetry; polymers; LDPE; LIMM; analytical method; data analysis; determination of polarization; electrically stressed low-density polyethylene; laser intensity modulation method; laser intensity modulation technique; model of spatial distributions of space charge; numerical method; numerical modification; polarization spatial distribution model; space charge distribution determination; Amplifiers; Electrets; Frequency; Intensity modulation; Laser theory; Piezoelectric polarization; Polymers; Space charge; Temperature; Thermal force;
Journal_Title :
Electrical Insulation, IEEE Transactions on
