タムラ タダヒサ   Tamura Tadahisa
  田村 忠久
   所属   神奈川大学  工学部 物理学教室
    神奈川大学大学院  工学研究科 工学専攻(応用物理学領域)
   職種   教授
言語種別 英語
発行・発表の年月 2021/06
形態種別 学術雑誌
査読 査読あり
標題 Measurement of the Iron Spectrum in Cosmic Rays from 10 GeV/n to 2.0 TeV/n with the
Calorimetric Electron Telescope on the International Space Station
執筆形態 共著
掲載誌名 PHYSICAL REVIEW LETTERS
掲載区分国外
出版社・発行元 American Physical Society
巻・号・頁 126(241101),pp.1-7
著者・共著者 O. Adriani, et al.
概要 The CALET instrument can identify individual nuclear species via a measurement of their electric charge with a
dynamic range extending far beyond iron (up to atomic number Z = 40). The energy is measured by
a homogeneous calorimeter with a total equivalent thickness of 1.2 proton interaction lengths preceded by a
thin (3 radiation lengths) imaging section providing tracking and energy sampling. The analysis of the data
and the detailed assessment of systematic uncertainties are described and results are compared with the
findings of previous experiments. The observed differential spectrum is consistent within the errors with
previous experiments. In the region from 50 GeV/n to 2 TeV/n our present data are compatible with a
single power law with spectral index −2.60 +- 0.03.