The attenuation length of cosmic ray iron in the atmosphere obtained by tiger experiment

  • S. Kodaira
  • , M. Hareyama
  • , N. Hasebe
  • , T. Miyachi
  • , K. Sakurai
  • , W. R. Binns
  • , J. R. Cummings
  • , M. H. Israel
  • , J. T. Link
  • , B. F. Rauch
  • , L. M. Scott
  • , S. Geier
  • , R. A. Mewaldt
  • , L. M. Barbier
  • , J. W. Mitchell
  • , G. A. De Nolfo
  • , R. E. Streitmatter
  • , C. J. Waddington

Research output: Contribution to journalArticlepeer-review

Abstract

A precise measurement of elemental abundances of galactic cosmic rays from charges Z = 20 to 34 was made by TIGER balloon experiment. Using the various path lengths in the atmosphere between 4 and 16 g/cm2 from the TIGER flight data, we derived the attenuation length of iron nuclei with the energy above 2.5 GeV/n in the atmosphere. As the result, we obtained the attenuation length of 15.5 ± 0.6 g/cm2 which is consistent with previous results of balloon measurements.

Original languageEnglish
Pages (from-to)6702-6704
Number of pages3
JournalInternational Journal of Modern Physics A
Volume20
Issue number29
DOIs
StatePublished - Nov 20 2005

Keywords

  • Cosmic ray
  • Elemental abundance
  • Heavy nuclei
  • Interaction mean free path

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