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The effect of gamma-ray irradiation on relative permittivity, ac conductivity and dielectric loss tangent of epoxy resin and polyethylene has been investigated. Laminated samples were irradiated by 60Co gamma source at room temperature in air with a dose rate of 10 kGy/h and the total dose were 100 kGy and 1000 kGy. The dielectric properties were measured by using a Precision LCR Meter (Agilent E4980A)...
This paper presents study aimed at understanding the effect of gamma-ray irradiation on surface charge decay through bulk of epoxy resin. Laminated epoxy resin was employed as test sample which was irradiated in air up to 100 kGy and then up to 1000 kGy with dosage rate of 10 kGy / h by using a 60Co gamma-source before the test. Surface charge was introduced by corona charging method and surface potential...
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