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 2017/11
形態種別 学術雑誌
査読 査読あり
標題 Energy Spectrum of Cosmic-ray Electron + Positron from 10 GeV to 3 TeV Observed
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 the American Physical Society
巻・号・頁 119(18),pp.181101-1-181101-6
著者・共著者 O. Adriani, et. al.
概要 First results of a cosmic-ray electron and positron spectrum from 10 GeV to 3 TeV is presented based upon observations with the CALET instrument on the International Space Station starting in October, 2015. Nearly a half million electron and positron events are included in the analysis. CALET is an all-calorimetric instrument with total vertical thickness of 30 X0 and a fine maging capability designed to achieve a large proton rejection and excellent energy resolution well into the TeVenergy region. The observed energy spectrum over 30 GeV can be fit with a single power law with a spectral index of −3.152 +- 0.016
(stat + syst). Possible structure observed above 100 GeV requires further investigation with increased statistics and refined data analysis.
DOI https://doi.org/10.1103/PhysRevLett.119.181101