Average numbers of scintillation photons and electrons produced by an alpha particle in high-density xenon gas

Mitsuteru Mimura, Shingo Kobayashi, Naoki Masuyama, Mitsuhiro Miyajima, Nobuyuki Hasebe

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    Abstract

    The average numbers of scintillation photons and electrons produced by an α-particle with 5.49 MeV were determined in high-density xenon gas in the density range of 0.03-0.12g/cm3. No significant density dependence was observed for the number of excited atoms or liberated electrons. The average energies expended per excited atom (Wex-value) and liberated electron (W-value) were found to be 34:1 ± 2:4 and 20:9 ± 0:4eV, respectively. It was also found that some liberated electrons escape from recombination at zero electric field.

    Original languageEnglish
    Article number076501
    JournalJapanese Journal of Applied Physics
    Volume48
    Issue number7 PART 1
    DOIs
    Publication statusPublished - 2009 Jul

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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