Simultaneous thermally stimulated luminescence and depolarization current in low density polyethylene

Thermally stimulated luminescence and thermally stimulated depolarization current (TSD) measurements were made simultaneously on low-density polyethylene samples 0.175 mm thick, carrying evaporated gold electrodes. The sample were DC-polarized at room temperature, cooled to -190°C, and X-irradiated with the field still applied, and then heated in short-circuit at 3 K/min. It was shown that the space-charge transport component of the TSD current between -190 and 30°C is negligible, charge injection begins around -10°C and increases rapidly with increasing temperature, and the injected charge is transported through the amorphous regions of the sample to the opposite electrode