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

doi:10.1016/S0273-1177(01)00109-0

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
巻	27
号	4
DOI	https://doi.org/10.1016/S0273-1177(01)00109-0
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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10.1016/S0273-1177(01)00109-0

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title = "Cosmic-ray electron flux from 10 to 100 GeV measured by the bets instrument",

abstract = "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.",

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

year = "2001",

doi = "10.1016/S0273-1177(01)00109-0",

language = "English",

volume = "27",

pages = "675--680",

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TY - JOUR

T1 - Cosmic-ray electron flux from 10 to 100 GeV measured by the bets instrument

AU - Torii, Shoji

AU - Tamura, T.

AU - Tateyama, N.

AU - Yoshida, K.

AU - Ouchi, T.

AU - Nishimura, J.

AU - Yamagami, T.

AU - Saito, Y.

AU - Murakami, H.

AU - Kobayashi, T.

AU - Komori, Y.

AU - Kasahara, K.

AU - Yuda, T.

PY - 2001

Y1 - 2001

N2 - 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.

AB - 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.

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U2 - 10.1016/S0273-1177(01)00109-0

DO - 10.1016/S0273-1177(01)00109-0

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EP - 680

JO - Life sciences and space research

JF - Life sciences and space research

SN - 0273-1177

IS - 4

ER -

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

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