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Thermally stimulated depolarization (TSD), conductivity (TSC) and luminescence (TSL) are now firmly established as experimental techniques for the study of charge trapping and movement in solid dielectrics. However, TSD/TSL and TSC/TSL should be measured simultaneously on the same sample in order to maximise the information which can be drawn from the data; unfortunately few authors have reported...
The principal cause of degradation in polyethylene exposed to the normal atmosphere is oxidation [1–2], thought to proceed via a free radical mechanism involving hydroperoxide intermediates. The final oxidation products are probably present mainly in the form of carbonyl groups. One of the manifestations of degradation in polyethylene is a rise in dielectric loss factor (dissipation or conductance)...
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