α-particle spectrometer based on xenon gas ionization chamber using coplanar electrodes

Nobuyuki Hasebe, M. Miyajima, E. Shibamura, A. Hitachi, M. Naito, K. Murakami, H. Kusano, J. A. Matias-Lopes, V. V. Dmitrenko

    Research output: Contribution to journalArticle

    Abstract

    A parallel plate gas ionization chamber with coplanar electrodes was designed and developed to be used as an α-particle spectrometer measuring low level α-emission rates in environmental samples from the vicinity of nuclear power plants. The chamber was filled with a 3 atm gas mixture of Xe + 0.7% CH 4 . Its performance was investigated using a mixed α-particle source ( 237 Np, 241 Am, and 244 Cm). An excellent energy resolution of 59 keV (1.0%) in fwhm for 5.81 MeV 244 Cm α-particles was obtained, which is enough to identify major sources of alpha radioisotopes ( 238 U, 235 U, 237 Np, 239 Pu, 238 Pu, 241 Am, 244 Cm) to be found near nuclear power plants.

    Original languageEnglish
    Pages (from-to)123-127
    Number of pages5
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume925
    DOIs
    Publication statusPublished - 2019 May 1

    Fingerprint

    Particle spectrometers
    Ionization of gases
    gas ionization
    Ionization chambers
    Xenon
    ionization chambers
    xenon
    Nuclear power plants
    nuclear power plants
    spectrometers
    Electrodes
    electrodes
    Radioisotopes
    Gas mixtures
    parallel plates
    gas mixtures
    chambers
    methylidyne
    energy

    Keywords

    • Coplanar electrode
    • Xenon gas ionization chamber
    • α-ray spectrometer

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

    Cite this

    α-particle spectrometer based on xenon gas ionization chamber using coplanar electrodes. / Hasebe, Nobuyuki; Miyajima, M.; Shibamura, E.; Hitachi, A.; Naito, M.; Murakami, K.; Kusano, H.; Matias-Lopes, J. A.; Dmitrenko, V. V.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 925, 01.05.2019, p. 123-127.

    Research output: Contribution to journalArticle

    Hasebe, Nobuyuki ; Miyajima, M. ; Shibamura, E. ; Hitachi, A. ; Naito, M. ; Murakami, K. ; Kusano, H. ; Matias-Lopes, J. A. ; Dmitrenko, V. V. / α-particle spectrometer based on xenon gas ionization chamber using coplanar electrodes. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2019 ; Vol. 925. pp. 123-127.
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    AU - Hasebe, Nobuyuki

    AU - Miyajima, M.

    AU - Shibamura, E.

    AU - Hitachi, A.

    AU - Naito, M.

    AU - Murakami, K.

    AU - Kusano, H.

    AU - Matias-Lopes, J. A.

    AU - Dmitrenko, V. V.

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    N2 - A parallel plate gas ionization chamber with coplanar electrodes was designed and developed to be used as an α-particle spectrometer measuring low level α-emission rates in environmental samples from the vicinity of nuclear power plants. The chamber was filled with a 3 atm gas mixture of Xe + 0.7% CH 4 . Its performance was investigated using a mixed α-particle source ( 237 Np, 241 Am, and 244 Cm). An excellent energy resolution of 59 keV (1.0%) in fwhm for 5.81 MeV 244 Cm α-particles was obtained, which is enough to identify major sources of alpha radioisotopes ( 238 U, 235 U, 237 Np, 239 Pu, 238 Pu, 241 Am, 244 Cm) to be found near nuclear power plants.

    AB - A parallel plate gas ionization chamber with coplanar electrodes was designed and developed to be used as an α-particle spectrometer measuring low level α-emission rates in environmental samples from the vicinity of nuclear power plants. The chamber was filled with a 3 atm gas mixture of Xe + 0.7% CH 4 . Its performance was investigated using a mixed α-particle source ( 237 Np, 241 Am, and 244 Cm). An excellent energy resolution of 59 keV (1.0%) in fwhm for 5.81 MeV 244 Cm α-particles was obtained, which is enough to identify major sources of alpha radioisotopes ( 238 U, 235 U, 237 Np, 239 Pu, 238 Pu, 241 Am, 244 Cm) to be found near nuclear power plants.

    KW - Coplanar electrode

    KW - Xenon gas ionization chamber

    KW - α-ray spectrometer

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