Title of article
Measurements of 0.2–20 GeV/n cosmic-ray proton and helium spectra from 1997 through 2002 with the BESS spectrometer
Author/Authors
Shikaze، نويسنده , , Y. and Haino، نويسنده , , S. and Abe، نويسنده , , K. and Fuke، نويسنده , , H. and Hams، نويسنده , , T. and Kim، نويسنده , , K.C. and Makida، نويسنده , , Y. and Matsuda، نويسنده , , S. and Mitchell، نويسنده , , J.W. and Moiseev، نويسنده , , A.A. and Nishimura، نويسنده , , J. and Nozaki، نويسنده , , M. and Orito، نويسنده , , S. and Ormes، نويسنده , , J.F. and Sanuki، نويسنده , , T. and Sasaki، نويسنده , , M. J. Seo، نويسنده , , E.S. and Streitmatter، نويسنده , , R.E. and Suzuki، نويسنده , , J. and Tanaka، نويسنده , , K. and Yamagami، نويسنده , , T. and Yamamoto، نويسنده , , A. and Yoshida، نويسنده , , T. and Yoshimura، نويسنده , , K.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
14
From page
154
To page
167
Abstract
We measured low energy cosmic-ray proton and helium spectra in the kinetic energy range 0.215–21.5 GeV/n at different solar activities during a period from 1997 to 2002. The observations were carried out with the BESS spectrometer launched on a balloon at Lynn Lake, Canada. A calculation for the correction of secondary particle backgrounds from the overlying atmosphere was improved by using the measured spectra at small atmospheric depths ranging from 5 through 37 g/cm2. The uncertainties including statistical and systematic errors of the obtained spectra at the top of atmosphere are 5–7% for protons and 6–9% for helium nuclei in the energy range 0.5–5 GeV/n.
Keywords
Cosmic-ray proton , Cosmic-ray helium , Atmospheric proton , Solar modulation , Superconducting spectrometer
Journal title
Astroparticle Physics
Serial Year
2007
Journal title
Astroparticle Physics
Record number
1333246
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