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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	675-680
Number of pages	6
Journal	Advances in Space Research
Volume	27
Issue number	4
DOIs	https://doi.org/10.1016/S0273-1177(01)00109-0
Publication status	Published - 2001
Externally published	Yes

ASJC Scopus subject areas

Space and Planetary Science
Astronomy and Astrophysics

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10.1016/S0273-1177(01)00109-0

Cite this

@article{ec03c1595b534c859064e60efa0ac958,

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",

journal = "Life sciences and space research",

issn = "0273-1177",

publisher = "Elsevier Limited",

number = "4",

}

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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VL - 27

SP - 675

EP - 680

JO - Life sciences and space research

JF - Life sciences and space research

IS - 4

ER -

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

Abstract

ASJC Scopus subject areas

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