JACEE emulsion chambers for studying the energy spectra of high energy cosmic ray protons and helium

  • Burnett T
  • Dake S
  • Fuki M
 et al. 
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Abstract

Emulsion chambers are being used in a series of stratospheric balloon flights to study nuclear interactions, charge composition, and energy spectra of cosmic ray nuclei over the energy range 1012-1015eV. Charge identification involves grain, gap, and/or delta-ray counting in emulsion plates having different sensitivities on two sides of an acrylic base. Electromagnetic cascade energies are measured with resolutions of about 25% by the three-dimensional track counting method. This report describes the apparatus, the measurement techniques, and the analysis methods used to determine the primary proton and helium spectra. © 1986.

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Authors

  • T. H. Burnett

  • S. Dake

  • M. Fuki

  • J. C. Gregory

  • T. Hayashi

  • R. Holynski

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