Effect of gamma-ray irradiation on the TSC in polyethersulfone

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

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)732-737
    Number of pages6
    JournalIEEE Transactions on Dielectrics and Electrical Insulation
    Volume4
    Issue number6
    DOIs
    Publication statusPublished - 1997

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    Free volume
    Gamma rays
    Dosimetry
    Irradiation
    Radiation
    Electric potential

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Effect of gamma-ray irradiation on the TSC in polyethersulfone. / Kim, E. J.; Kato, G.; Ohara, T.; Ohki, Yoshimichi; Li, S. T.

    In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 4, No. 6, 1997, p. 732-737.

    Research output: Contribution to journalArticle

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    AU - Ohki, Yoshimichi

    AU - Li, S. T.

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