Title :
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
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;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on
Print_ISBN :
0-7803-7725-7
DOI :
10.1109/ICPADM.2003.1218567
