オクノ　ショウジ   Okuno Shoji
  奥野　祥二
   所属   神奈川大学  情報学部 システム数理学科
   職種   助教
言語種別 日本語
発行・発表の年月 2005/08
形態種別 その他
標題 CALET Observation of Nuclear Components in Primary Cosmic Rays
執筆形態 共著
掲載誌名 29th International Cosmic Ray Conference Pune (2005) 3
巻・号・頁 321-324頁
著者・共著者 M. Ichimura, S. Kuramata, S. Torii, T. Tamura, K. Yoshida, K. Kasahara, J. ChangH. Fuke, K. Hibino, T. Kashiwagi, Y. Katayose, H. Kitamura, T. Kobayashi, Y. Komori, F. Makino, K. Mizutani, H. Murakami, J. Nishimura, S. Okuno, Y. Saito, M. Shibata, M. Takayanagi, N. Tateyama, T. Terasawa, S. Tomida, Y. Uchihori, S. Ueno, T. Yamagami, T. Yuda,
概要 M. Ichimura, S. Kuramata, S. Torii, T. Tamura, K. Yoshida, K. Kasahara, J. ChangH. Fuke, K. Hibino, T. Kashiwagi, Y. Katayose, H. Kitamura, T. Kobayashi, Y. Komori, F. Makino, K. Mizutani, H. Murakami, J. Nishimura, S. Okuno, Y. Saito, M. Shibata, M. Takayanagi, N. Tateyama, T. Terasawa, S. Tomida, Y. Uchihori, S. Ueno, T. Yamagami, T. Yuda,
Although CALET is originally designed for detections of electrons and gamma rays, nuclear components of
primary cosmic rays, from protons to iron nucleus and more, are also observable by CALET, utilizing the total
absorption calorimeter (TASC). TASC has 1.6 m.f.p. for protons which is enough to measure the energy of
protons up to 1000 TeV. Using the observed spectra, the following items will be discussed:
(1) the detailed structure of the spectrum, checking the change of the spectrum index and comparing indices
of various components. More than 300 iron nuclei with the energy greater than 1 TeV/n will be observed.
(2) secondary/primary ratio. Especially we can observe the both of B/C ratio and sub-Fe/Fe ratio. At the space
station, the observation is free from the atmospheric contamination corrections.
These observations are essential for the acceleration mechanisms and the propagation of cosmic rays.
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