Atmospheric gamma-ray observation over 100GeV with PPB-BETS by long duration balloon flight in Antarctica

K. Yoshida, H. Kitamura, Shoji Torii, T. Tamura, K. Kasahara, J. Chang, I. Iijima, A. Kadokura, Y. Katayose, T. Kobayashi, Y. Komori, Y. Matsuzaka, K. Mizutani, H. Murakami, M. Namiki, J. Nishimura, S. Ohta, Y. Saito, M. Shibata, N. TateyamaT. Yamagami, H. Yamagishi, T. Yuda

    研究成果: Conference contribution

    抄録

    Since atmospheric gamma rays at high altitude are mainly produced by a single interaction of primary cosmic rays with atmospheric nuclei, they are very useful to study nuclear interaction models and atmospheric neutrinos. We have observed atmospheric gamma rays from 100 GeV to 1 TeV with PPB-BETS by a long duration balloon flight of Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an altitudeof ∼35 km in January 2004. The detector of PPB-BETS is an imaging calorimeter composed of scintillating-fiber belts and plastic scintillators inserted between lead plates. We have collected 5.7×103 events over 100 GeV. The number of observed atmospheric gamma rays is 1.0×102 events in the energy range of 100 GeV to 1 TeV.

    本文言語English
    ホスト出版物のタイトル29th International Cosmic Ray Conference, ICRC 2005
    出版社Tata Institute of Fundamental Research
    ページ53-56
    ページ数4
    9
    出版ステータスPublished - 2005
    イベント29th International Cosmic Ray Conference, ICRC 2005 - Pune
    継続期間: 2005 8 32005 8 10

    Other

    Other29th International Cosmic Ray Conference, ICRC 2005
    CityPune
    Period05/8/305/8/10

    ASJC Scopus subject areas

    • 核物理学および高エネルギー物理学

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