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

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    Keywords

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

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

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