Radioactivity of ybco and bi-2223 tapes under low energy neutron flux

Hiroshi Ueda, Atsushi Ishiyama, Nobuyuki Miyahara, Naoji Kashima, Shigeo Nagaya

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The quality of high-temperature superconductors (HTSs) is rapidly increasing, and they can be used in power systems such as SMES systems and in industries as Si single-crystal growth pullers. In the future, HTS conductors are expected to be used for the magnets in nuclear fusion reactors or accelerators. In such applications, HTS conductors will be exposed to radiation. As a result, HTS conductors become radioactive making the operation and maintenance of the reactors or accelerators difficult; this also leads to an increase in the amount of nuclear waste generated. Therefore, we carry out experiments on the radiation damage in HTS conductors to study the characteristics of HTS conductors in radiation environments and to create an industrial database of the radiation effects on HTSs. We also carry out radioactive analyses on HTS conductors in order to clarify the relationship between the irradiation dose and the activity of HTS conductors. In this study, we prepared YBCO and Bi-2223 tapes and carried out the following preliminary experiments: (a) irradiation of the sample HTS tapes with 2-MeV neutrons at room temperature without transport current and (b) study of neutron-induced radioactivity by gamma-ray spectrometry using a Ge detector after the irradiation.

    Original languageEnglish
    Article number5067225
    Pages (from-to)2872-2876
    Number of pages5
    JournalIEEE Transactions on Applied Superconductivity
    Volume19
    Issue number3
    DOIs
    Publication statusPublished - 2009 Jun

    Fingerprint

    High temperature superconductors
    Neutron flux
    Radioactivity
    flux (rate)
    radioactivity
    high temperature superconductors
    Tapes
    tapes
    conductors
    energy
    Irradiation
    irradiation
    Particle accelerators
    Neutrons
    accelerators
    Radioactive Waste
    Radiation
    neutrons
    fusion reactors
    Radiation effects

    Keywords

    • I degradation
    • Radioactive analyses
    • Ts conductor

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Radioactivity of ybco and bi-2223 tapes under low energy neutron flux. / Ueda, Hiroshi; Ishiyama, Atsushi; Miyahara, Nobuyuki; Kashima, Naoji; Nagaya, Shigeo.

    In: IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, 5067225, 06.2009, p. 2872-2876.

    Research output: Contribution to journalArticle

    Ueda, Hiroshi ; Ishiyama, Atsushi ; Miyahara, Nobuyuki ; Kashima, Naoji ; Nagaya, Shigeo. / Radioactivity of ybco and bi-2223 tapes under low energy neutron flux. In: IEEE Transactions on Applied Superconductivity. 2009 ; Vol. 19, No. 3. pp. 2872-2876.
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