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The combined effects of two kinds of irradiation, being gamma and electron-beam, on the PET electrical conductivity are investigated. Gamma ray produces homogeneous irradiation in the material bulk whereas in e-beam with moderate energy (20keV), energy and primary electrons are deposited near the surface. The study is focused on the comparison between the gamma irradiated films and those successively...
The aim of this work is to understand the role of gamma radiation in trap creation and/or trapping and detrapping space charge mechanisms in isotactic polypropylene (iPP). The measurements are performed on 25 µm thick films: virgin polypropylene and one irradiated with gamma rays at a dose of 100 kGy. The experimental study is focused on measuring final thermostimulated discharge currents. At the...
Electrical behavior of gamma irradiated isotactic polypropylene (iPP) films for different applied field and temperatures is reported in this work. The induced change in the transient charging current for the irradiated film, in comparison of virgin one, was studied in the dc field range 2–4 MV/m, at different temperatures (23–100°C). A 25 microns thick film was irradiated in air at room temperature...
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