Measurements of Cosmic-ray Proton and Helium Spectra from the Bess-polar Long-duration Balloon Flights over Antarctica

@inproceedings{Abe2016MeasurementsOC,
  title={Measurements of Cosmic-ray Proton and Helium Spectra from the Bess-polar Long-duration Balloon Flights over Antarctica},
  author={Ken-ichi Abe and Hideyuki Fuke and S. Haino and T. Hams and Munetake Hasegawa and Akiko Horikoshi and A. Itazaki and Ki Chun Kim and Taisei Kumazawa and Akiko Kusumoto and Moo Hyun Lee and Y.. Makida and Shoya Matsuda and Yasuhisa Matsukawa and Kengo Matsumoto and John W. Mitchell and Zacharia Myers and Joel Daniel Nishimura and Masahiro Nozaki and Ryo Orito and Jonathan F. Ormes and Nicolas Picot-Clemente and Kazumitsu Sakai and Manami Sasaki and Eo Su Seo and Yoshiaki Shikaze and Ryota Shinoda and Robert E. Streitmatter and Jyunji Suzuki and Yoshimitsu Takasugi and Kensuke Takeuchi and Kiyohisa Tanaka and Namrata Thakur and Takamasa Yamagami and Akio Yamamoto and Tatsuo Yoshida and Kazuyoshi Yoshimura},
  year={2016}
}
The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two longduration balloon flights over Antarctica in 2004 December and 2007 December at substantially different levels of solar modulation. Proton and helium spectra probe the origin and propagation history of cosmic rays in the galaxy, and are essential to calculations of the expected spectra of cosmic-ray antiprotons, positrons, and electrons from interactions of primary cosmic-ray nuclei with the… CONTINUE READING

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