Title :
The pressure-pulse method for measuring space-charge distribution in irradiated insulators
Author :
Cals, M.P. ; Marque, J.P. ; Alquié, C.
Author_Institution :
Office Nat. d´´Etudes et de Recherches Aerospatiales, Chatillon, France
fDate :
12/1/1989 12:00:00 AM
Abstract :
The authors report on the determination of the spatial charge distribution in electron-irradiated Teflon films by the pressure-wave-propagation method. A pressure pulse generated in the sample by a Nd-YAG pulsed laser is used as a virtual probe of the charge distribution. The authors show that positive charges are injected at the metal/dielectric interface. The charges remain trapped after a surface discharge, but buried incident electrons disappear. The method could also be applied to insulators used in a vacuum
Keywords :
charge measurement; electron beam effects; organic insulating materials; polymer films; space charge; surface discharges; YAG:Nd; YAl5O12:Nd; buried incident electrons; charge distribution; electron-irradiated Teflon films; irradiated insulators; metal/dielectric interface; pressure-pulse method; pressure-wave-propagation method; space-charge distribution; surface discharge; Charge measurement; Current measurement; Dielectrics; Electrodes; Extraterrestrial measurements; Insulation; Optical propagation; Optical pulse generation; Satellites; Space vehicles;
Journal_Title :
Electrical Insulation, IEEE Transactions on
