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The Activation Energy of the Heating Treatment of Nuclear Track Detector CR-39 (RESEARCH NOTE)

This paper aims at studying the effect of heating on nuclear track detector CR-39. The treatment of the detectors has been carried out thermally in the range of (135-175°C) with an increase of 10°C before and after the radiation of the detector with alpha particles emitted from the source of Am 241 with an activity of 1μc and an energy of 3.5Mev. It has been concluded that increasing the heating degree leads to a gradual increase in the diameters of the alpha particle tracks for the heated samples as compared with the standard samples (unheated). Besides, the energy of activating the thermal treatment (E a ) is calculated. It has been discovered that it equals 0.23± 0.012 eV and does not depend on the type of heating while it depends basically on the detector type used.