Cosmic-ray electron flux from 10 to 100 GeV measured by the bets instrument

Shoji Torii*, T. Tamura, N. Tateyama, K. Yoshida, T. Ouchi, J. Nishimura, T. Yamagami, Y. Saito, H. Murakami, T. Kobayashi, Y. Komori, K. Kasahara, T. Yuda

*この研究の対応する著者

研究成果: Article査読

抄録

New measurements of the electron flux from 10 to 100 GeV were carried out with the BETS (balloon-borne electron telescope with scintillating fibers) instrument. The detector is an imaging calorimeter consisting of scintillating-fiber belts of 36 layers (each 280 mm wide) and the 8 plates of lead (each 5mm thick). Rejection of the background protons was performed at an efficiency of ~ 2000 using the shower imaging capability with high granulation. The observed electron flux around a few 10 GeV is consistent with the recent results reported by the HEAT group. Comparing the flux with theoretical expectations from a diffusion model, the best fit is obtained for the model of a diffusion coefficient of 2 × 1028(E/GeV)0.3 cm2/sec for the SN rate of once per 30 years in the Galaxy.

本文言語English
ページ(範囲)675-680
ページ数6
ジャーナルAdvances in Space Research
27
4
DOI
出版ステータスPublished - 2001
外部発表はい

ASJC Scopus subject areas

  • 宇宙惑星科学
  • 天文学と天体物理学

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