Measurements of cosmic-ray 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, K. Yoshimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Balloon-Borne Experiment with a Superconducting Spectrometer (BESS-Polar II) flew successfully over Antarctica during 24.5 days in December 2007 through January 2008. The long duration of the flight, and the good stability of the detectors, improved by a factor of 5 the number of cosmic-ray events previously recorded with BESS-Polar I, reaching about 4.6 billion collected particles. The charge, the rigidity and the velocity of crossing particles are measured by using the various particle detectors present in the instrument. These measurements can precisely identify cosmic-ray hydrogen and helium isotopes among the incoming particles in the GeV per nucleon region, which are expected to provide important information on cosmic-ray propagation in space. The BESS-Polar II instrument and the analysis to measure cosmic-ray hydrogen and helium isotopes are presented in this paper.

Original languageEnglish
Title of host publicationProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
PublisherSociedade Brasileira de Fisica
ISBN (Electronic)9788589064293
Publication statusPublished - 2013
Event33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
Duration: Jul 2 2013Jul 9 2013

Publication series

NameProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
Volume2013-October

Other

Other33rd International Cosmic Rays Conference, ICRC 2013
CountryBrazil
CityRio de Janeiro
Period7/2/137/9/13

Keywords

  • BESS
  • BESS-Polar II
  • Balloon-borne experiment
  • Cosmic-ray isotopes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    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., ... Yoshimura, K. (2013). Measurements of cosmic-ray hydrogen and helium isotopes with BESS-Polar II. In Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013 (Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013; Vol. 2013-October). Sociedade Brasileira de Fisica.