Title :
The thermally stimulated currents in irradiated polypropylene films charged in high electrical fields
Author :
Borisova, M.E. ; Galukov, O.V. ; Inozemtsev, N.Ju.
Author_Institution :
St. Petersburg State Tech. Univ., Russia
Abstract :
The charge and discharge currents and the thermally stimulated depolarization (TSD) currents of polypropylene (PP) films, charged in electrical fields in a wide temperature range were studied. The anomalous isothermal discharge currents and anomalous TSD currents were observed in films, polarized in high electrical fields. We suppose that anomalous effect in PP films could be due to injection of charge carriers (electrons and holes) from electrodes with the formation of two space charge clouds. The discharge currents measured in isothermal and nonisothermal conditions in PP films irradiated by an electron beam with energy 900 keV have been studied. The study of these characteristics can give additional information about anomalous processes in films
Keywords :
electron beam effects; polymer films; space charge; thermally stimulated currents; anomalous isothermal discharge currents; carrier injection; charge currents; discharge currents; electron beam irradiation; high electrical fields; irradiated polypropylene films; isothermal conditions; nonisothermal conditions; space charge clouds; thermally stimulated currents; thermally stimulated depolarization; Charge carrier processes; Charge carriers; Clouds; Current measurement; Electrodes; Energy measurement; Isothermal processes; Polarization; Space charge; Temperature distribution;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.832159
