Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium

H. Iijima, T. Asonuma, T. Hirose, M. Irako, K. Kadoya, T. Kumita, B. Matsumoto, K. Wada, Masakazu Washio

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τo-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τo-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.

    Original languageEnglish
    Pages (from-to)641-648
    Number of pages8
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume483
    Issue number3
    DOIs
    Publication statusPublished - 2002 May 11

    Fingerprint

    bunching
    positronium
    Positrons
    Full width at half maximum
    positrons
    Modulation
    velocity modulation
    life (durability)
    repetition
    permeability

    Keywords

    • Buncher
    • Lifetime measure
    • Ortho-positronium
    • Slow positron beam

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium. / Iijima, H.; Asonuma, T.; Hirose, T.; Irako, M.; Kadoya, K.; Kumita, T.; Matsumoto, B.; Wada, K.; Washio, Masakazu.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 483, No. 3, 11.05.2002, p. 641-648.

    Research output: Contribution to journalArticle

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    AU - Iijima, H.

    AU - Asonuma, T.

    AU - Hirose, T.

    AU - Irako, M.

    AU - Kadoya, K.

    AU - Kumita, T.

    AU - Matsumoto, B.

    AU - Wada, K.

    AU - Washio, Masakazu

    PY - 2002/5/11

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    AB - On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τo-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τo-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.

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