The role of the persistent polarization in dielectric charging and relaxation of radioelectrets

Author

Boev, S.G. ; Tyutnev, A.P. ; Paderin, V.A. ; Popov, O.N.

Author_Institution

Tomsk Polytech. Inst., USSR

fYear

1991

fDate

25-27 Sep 1991

Firstpage

788

Lastpage

791

Abstract

Charge accumulation in polar dielectrics irradiated with charged particles is accompanied by formation of the slow component of the persistent polarization P_s which escapes registration by routine measurements of the permittivity ∈. Some ceramics and glasses with ∈<10 feature extremely high P _s on the order of 10^-7 C/cm². The present analysis is based on a two-layer dielectric with a constant conductivity of the irradiated region while P_s is described by the Debye model. The appearance of the P_s substantially affects the build-up rate of the space charge in a dielectric

Keywords

dielectric polarisation; dielectric relaxation; electrets; electron beam effects; permittivity; space charge; Debye model; charge accumulation; constant conductivity; electron radiation; permittivity; persistent polarization; polar dielectrics; radioelectrets; relaxation; space charge build-up rate; Ceramics; Charge measurement; Conductivity; Current measurement; Dielectric constant; Dielectric measurements; Glass; Particle measurements; Permittivity measurement; Polarization;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)

Conference_Location

Berlin

Print_ISBN

0-7803-0112-9

Type

conf

DOI

10.1109/ISE.1991.167313

Filename

167313