Study of charge injection in insulators submitted to diverging fields

Various theoretical models have been proposed to explain the behavior of insulator-electrode interfaces in the case of strongly divergent electric fields. However until recently a direct measurement of the charge transferred at these interfaces could not be performed and very indirect ways had to be used. In this paper we propose a structure which allows for direct measurements of this charge using the PWP (pressure wave propagation) method. We present evidence of charge transferred around small diameter wires, embedded in an insulator, submitted to an applied voltage.

[1]  Takashi Maeno,et al.  Measurement of spatial charge distribution in thick dielectrics using the pulsed electroacoustic method , 1988 .

[2]  Gérard Dreyfus,et al.  New Principle for the Determination of Potential Distributions in Dielectrics , 1977 .

[3]  T. Ditchi,et al.  Direct measurement of injected charges in insulators submitted to strongly diverging fields using the pressure wave propagation method , 1996, 9th International Symposium on Electrets (ISE 9) Proceedings.

[4]  T. Hibma,et al.  Direct measurement of space‐charge injection from a needle electrode into dielectrics , 1986 .

[5]  G. Charpak,et al.  Pulsed laser determination of surface electric charge distributions , 1982 .

[6]  C. Mayoux,et al.  Mechanisms of electroluminescence during aging of polyethylene , 1985 .

[7]  Y. Tanaka,et al.  Three-dimensional space charge distribution in water tree tip using the pulsed electroacoustic method , 1996, 9th International Symposium on Electrets (ISE 9) Proceedings.

[8]  T. Ditchi,et al.  Electrical properties of electrode/polyethylene/electrode structures , 1989 .

[9]  Teruyoshi Mizutani,et al.  Space charge measurement techniques and space charge in polyethylene , 1994 .

[10]  T. Lebey,et al.  Time‐resolved measurement of space charge in polymeric material under prebreakdown ac field , 1988 .

[11]  Gérard Dreyfus,et al.  Stress-Wave Probing of Electric Field Distributions in Dielectrics , 1981 .

[12]  Ying Li,et al.  Pulsed electroacoustic method for measurement of charge accumulation in solid dielectrics , 1994 .

[13]  Jacques Lewiner,et al.  Evidence of strong correlation between space-charge buildup and breakdown in cable insulation , 1996 .