EFFECT OF RADIATION ON THE ELECTRICAL-PROPERTIES OF PLASTIC DETECTOR CR-39

The effect of high alpha-particle fluence on plastic detector CR-39 wa s studied by measuring the electrical properties of the detector as a function of irradiation dose and frequency using an impedance meter in the frequency range 0.005-500 kHz. When the plastic detector CR-39 is exposed to high irradiation doses, it loses its advantage as a track detector, because of the overlapping of the tracks occurring in the de tector at high irradiation fluence. Through the present measurements o f dielectric permittivity and conductivity at different frequencies an d temperatures, CR-39 could be used as a dosimeter for high irradiatio n doses.