Measurements of atmospheric antiprotons

K. Yamato, K. Abe, H. Fuke, S. Haino, Y. Makida, S. Matsuda, H. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. TanakaT. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We measured atmospheric antiproton spectra in the energy range 0.2 to 3.4 GeV, at sea level and at balloon altitude in the atmospheric depth range 4.5 to 26 g/cm2. The observed energy spectra, including our previous measurements at mountain altitude, were compared with estimated spectra calculated on various assumptions regarding the energy distribution of antiprotons that interacted with air nuclei.

Original languageEnglish
Pages (from-to)475-479
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4
Publication statusPublished - 2006 Jan 19


  • Atmospheric cosmic rays
  • Cosmic-ray antiprotons
  • Superconducting spectrometers


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