Precise measurements of hydrogen and helium isotopes with BESS-Polar II

N. Picot-Clémente, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. NozakiR. Orito, J. F. Ormes, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, Koji Yoshimura

Research output: Contribution to journalConference article

Abstract

A precise knowledge of cosmic-ray hydrogen and helium isotopes provides important information to better understand Galactic cosmic-ray propagation. Deuteron and helium 3 species are mainly secondary particles created by the spallation of primary proton and helium 4 particles during their propagation in the Galaxy. Secondary-to-primary ratios thus bring direct information on the average amount of material traversed by cosmic rays in the interstellar medium. The Balloon-borne Experiment with Superconducting Spectrometer BESS-Polar II flew over Antarctica for 24.5 days from December 2007 through January 2008, during the 23rd solar cycle minimum. The instrument is made of complementary particle detectors which allow to precisely measure the charge, velocity and rigidity of incident cosmic rays. It can accurately separate and precisely measure cosmic-ray hydrogen and helium isotopes between 0.2 and 1.5 GeV/nucleon. These data, which are the most precise to date, will be reported and their implications will be discussed.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - Jan 1 2017
Externally publishedYes
Event35th International Cosmic Ray Conference, ICRC 2017 - Bexco, Busan, Korea, Republic of
Duration: Jul 10 2017Jul 20 2017

Fingerprint

BESS (satellite)
helium isotopes
hydrogen isotopes
cosmic rays
propagation
radiation counters
spallation
Antarctic regions
balloons
solar cycles
rigidity
deuterons
spectrometers
galaxies
protons

ASJC Scopus subject areas

  • General

Cite this

Picot-Clémente, N., Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., ... Yoshimura, K. (2017). Precise measurements of hydrogen and helium isotopes with BESS-Polar II. Proceedings of Science.

Precise measurements of hydrogen and helium isotopes with BESS-Polar II. / Picot-Clémente, N.; Abe, K.; Fuke, H.; Haino, S.; Hams, T.; Hasegawa, M.; Horikoshi, A.; Itazaki, A.; Kim, K. C.; Kumazawa, T.; Kusumoto, A.; Lee, M. H.; Makida, Y.; Matsuda, S.; Matsukawa, Y.; Matsumoto, K.; Mitchell, J. W.; Moiseev, A. A.; Nishimura, J.; Nozaki, M.; Orito, R.; Ormes, J. F.; Sakai, K.; Sasaki, M.; Seo, E. S.; Shikaze, Y.; Shinoda, R.; Streitmatter, R. E.; Suzuki, J.; Takasugi, Y.; Takeuchi, K.; Tanaka, K.; Thakur, N.; Yamagami, T.; Yamamoto, A.; Yoshida, T.; Yoshimura, Koji.

In: Proceedings of Science, 01.01.2017.

Research output: Contribution to journalConference article

Picot-Clémente, N, Abe, K, Fuke, H, Haino, S, Hams, T, Hasegawa, M, Horikoshi, A, Itazaki, A, Kim, KC, Kumazawa, T, Kusumoto, A, Lee, MH, Makida, Y, Matsuda, S, Matsukawa, Y, Matsumoto, K, Mitchell, JW, Moiseev, AA, Nishimura, J, Nozaki, M, Orito, R, Ormes, JF, Sakai, K, Sasaki, M, Seo, ES, Shikaze, Y, Shinoda, R, Streitmatter, RE, Suzuki, J, Takasugi, Y, Takeuchi, K, Tanaka, K, Thakur, N, Yamagami, T, Yamamoto, A, Yoshida, T & Yoshimura, K 2017, 'Precise measurements of hydrogen and helium isotopes with BESS-Polar II', Proceedings of Science.
Picot-Clémente N, Abe K, Fuke H, Haino S, Hams T, Hasegawa M et al. Precise measurements of hydrogen and helium isotopes with BESS-Polar II. Proceedings of Science. 2017 Jan 1.
Picot-Clémente, N. ; Abe, K. ; Fuke, H. ; Haino, S. ; Hams, T. ; Hasegawa, M. ; Horikoshi, A. ; Itazaki, A. ; Kim, K. C. ; Kumazawa, T. ; Kusumoto, A. ; Lee, M. H. ; Makida, Y. ; Matsuda, S. ; Matsukawa, Y. ; Matsumoto, K. ; Mitchell, J. W. ; Moiseev, A. A. ; Nishimura, J. ; Nozaki, M. ; Orito, R. ; Ormes, J. F. ; Sakai, K. ; Sasaki, M. ; Seo, E. S. ; Shikaze, Y. ; Shinoda, R. ; Streitmatter, R. E. ; Suzuki, J. ; Takasugi, Y. ; Takeuchi, K. ; Tanaka, K. ; Thakur, N. ; Yamagami, T. ; Yamamoto, A. ; Yoshida, T. ; Yoshimura, Koji. / Precise measurements of hydrogen and helium isotopes with BESS-Polar II. In: Proceedings of Science. 2017.
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AU - Shinoda, R.

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AU - Takeuchi, K.

AU - Tanaka, K.

AU - Thakur, N.

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N2 - A precise knowledge of cosmic-ray hydrogen and helium isotopes provides important information to better understand Galactic cosmic-ray propagation. Deuteron and helium 3 species are mainly secondary particles created by the spallation of primary proton and helium 4 particles during their propagation in the Galaxy. Secondary-to-primary ratios thus bring direct information on the average amount of material traversed by cosmic rays in the interstellar medium. The Balloon-borne Experiment with Superconducting Spectrometer BESS-Polar II flew over Antarctica for 24.5 days from December 2007 through January 2008, during the 23rd solar cycle minimum. The instrument is made of complementary particle detectors which allow to precisely measure the charge, velocity and rigidity of incident cosmic rays. It can accurately separate and precisely measure cosmic-ray hydrogen and helium isotopes between 0.2 and 1.5 GeV/nucleon. These data, which are the most precise to date, will be reported and their implications will be discussed.

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