Scintillation and ionization yields produced by α-particles in high-density gaseous xenon

H. Kusano, T. Ishikawa, J. A M Lopes, M. Miyajima, E. Shibamura, Nobuyuki Hasebe

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The average numbers of scintillation photons and liberated electrons produced by 5.49-MeV α-particles were measured in high-density gaseous xenon. The density range is 0.12-1.32 g/cm 3 for scintillation measurements at zero electric field, and 0.12-1.03 g/cm 3 for the scintillation and ionization measurements under various electric fields. The density dependence of scintillation yield at zero electric field was observed. The Ws-value, which is defined as the average energy expended per photon, increases with density and becomes almost constant in the density range above 1.0 g/cm 3. Anti-correlations between average numbers of scintillation photons and liberated electrons were found to vary with density. It was also found that the total number of scintillation photons and liberated electrons decreases with increasing density. Several possible reasons for the variation in scintillation and ionization yields with density are discussed.

    Original languageEnglish
    Pages (from-to)40-45
    Number of pages6
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume683
    DOIs
    Publication statusPublished - 2012 Aug 11

    Fingerprint

    Xenon
    Scintillation
    xenon
    scintillation
    Ionization
    ionization
    Photons
    Electric fields
    photons
    Electrons
    electric fields
    electrons

    Keywords

    • High-density xenon
    • Ionization yield
    • Quenching
    • Scintillation yield

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Scintillation and ionization yields produced by α-particles in high-density gaseous xenon. / Kusano, H.; Ishikawa, T.; Lopes, J. A M; Miyajima, M.; Shibamura, E.; Hasebe, Nobuyuki.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 683, 11.08.2012, p. 40-45.

    Research output: Contribution to journalArticle

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    AU - Ishikawa, T.

    AU - Lopes, J. A M

    AU - Miyajima, M.

    AU - Shibamura, E.

    AU - Hasebe, Nobuyuki

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    AB - The average numbers of scintillation photons and liberated electrons produced by 5.49-MeV α-particles were measured in high-density gaseous xenon. The density range is 0.12-1.32 g/cm 3 for scintillation measurements at zero electric field, and 0.12-1.03 g/cm 3 for the scintillation and ionization measurements under various electric fields. The density dependence of scintillation yield at zero electric field was observed. The Ws-value, which is defined as the average energy expended per photon, increases with density and becomes almost constant in the density range above 1.0 g/cm 3. Anti-correlations between average numbers of scintillation photons and liberated electrons were found to vary with density. It was also found that the total number of scintillation photons and liberated electrons decreases with increasing density. Several possible reasons for the variation in scintillation and ionization yields with density are discussed.

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