Abstract

Effect of gamma irradiation on thermal properties of different types of nuclear track detectors like PADC (Homalite), PADC (American–Acrylics), Polycarbonate, Lexan, Makrofol-E, Triafol-TN, Triafol-BN and Polypropylene are studied in the dose range of 10 1– 10 6 Gy . For some detectors like PADC (Homalite), Lexan and Makrofol-E, the effect is not very significant. But for detectors like PADC (American-Acrylics), the thermal resistance comes down at a dose of 10 6 Gy and the detector decomposes at much lower temperatures. Polycarbonate detectors gain some thermal stability due to gamma exposure at the highest dose. In the case of polypropylene detectors, the thermal stability decreases drastically and the detector decomposes in four different steps in comparison to single-step decomposition shown by the pristine one.

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