Application of TSD and SEA methods for measurements of space charge and polarisation in PET electrets

Author

Motyl, E. ; Krause, Thilo

Author_Institution

Inst. of Electr. Eng. Fundamentals, Wroclaw Univ. of Technol., Poland

Volume

3

fYear

2003

fDate

1-5 June 2003

Firstpage

900

Abstract

The step electroacoustic (SEA) and thermally stimulated discharge (TSD) methods were applied for analysis of electric state in corona charged samples. Simultaneous measurements of electric field distribution and current during thermally stimulated discharge allow to get information on real space charge density and quasi-frozen polarisation in a dielectric. The TSD and SEA measurements are useful tools to determine the local values of real and polarisation charges in PET electrets and their decay during thermally stimulated discharging. The TSD current in PET electrets origins from decay of average value of quasi-frozen polarisation.

Keywords

acoustoelectric effects; charge measurement; dielectric polarisation; electrets; electric current measurement; electric field measurement; polymers; space charge; thermally stimulated currents; PET electric; corona charged sample; electric current measurement; electric field measurement; polarisation measurement; quasifrozen dielectric polarisation; space charge density; space charge measurement; step electroacoustic method; thermally stimulated discharge method; Charge measurement; Corona; Current measurement; Density measurement; Dielectric measurements; Electrets; Polarization; Positron emission tomography; Sea measurements; Space charge;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on

ISSN

1081-7735

Print_ISBN

0-7803-7725-7

Type

conf

DOI

10.1109/ICPADM.2003.1218567

Filename

1218567