Il Nuovo Cimento C

, Volume 13, Issue 5, pp 791–800 | Cite as

Cosmic-ray low-energy abundances from calcium to nickel

  • J. Medina
  • J. Sequeiros
Article
  • 19 Downloads

Summary

We have measured the elemental composition and mean masses of the cosmic rays from calcium to nickel using a Lexan polycarbonate stack exposed in a balloon flight. We obtain a 3% charge resolution for iron at an energy interval of (255÷545) MeV/nucleon at the top of the atmosphere. We have propagated the spectrum measured through the detector, the residual atmosphere, the solar cavity and the interstellar medium, obtaining the composition at sources with a 7% resolution for iron. We observe that it is not possible to resolve adjacent isotopes with the Lexan polycarbonate.

PACS 96.40

Cosmic rays 

PACS 98.60.Ce

Cosmic rays, origin, acceleration and propagation energy spectra 

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Copyright information

© Società Italiana di Fisica 1990

Authors and Affiliations

  • J. Medina
    • 1
  • J. Sequeiros
    • 1
  1. 1.Departamento de FisicaUniversidad de Alcalá de HenaresAlcalá de Henares MadridSpain

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