Effect of gamma-ray irradiation on the TSC in polyethersulfone

E. J. Kim*, G. Kato, T. Ohara, Y. Ohki, S. T. Li


研究成果: Article査読

10 被引用数 (Scopus)


When polyethersulfone was irradiated by γ rays and then poled at 37°C, a new TSC (thermally stimulated current) peak appeared at ∼100°C. This new peak and other peaks near 40 and 150°C increase with an increase in dose of ∼0.6 kGy, and this is considered to be due to trapped charges and other ionic carriers becoming mobile when rearrangement of scissioned chains occurs. However, if the dose exceeds 0.6 kGy, the peak magnitude decreases. Furthermore, if the TSC was poled at 120°C, only the peak near 150°C appeared and this peak monotonically decreased with an increase in the irradiation dose. A similar decreasing tendency was also observed in the conduction current and in the residual voltage. These decreasing features are considered to be caused by the radiation-induced change that rearrangement of scissioned chains decreases free volume for ionic transport.

ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
出版ステータスPublished - 1997

ASJC Scopus subject areas

  • 電子工学および電気工学


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