Interactions of Cosmic Ray Nuclei

Details Interactions of Cosmic Ray Nuclei Interactions of Cosmic Ray Nuclei

1994-02-16

arxiv.org/abs/astro-ph/9402042v1

Astronomy and Astrophysics

Astrophysics

15 pages, AA-ptex, accepted for publ. in A&A

Scientific paper

We present convenient formulae for the energy losses of energetic atomic nuclei over the entire energy range relevant to the physics of cosmic rays. Results are applied to a leaky-box equation with a complete loss term. Thereby we derive the equilibrium spectrum of cosmic rays in various types of galaxies. We emphasize a spectral break energy at 450 MeV independent of the matter density, resulting from the transition from Coulomb and ionization losses to pion production losses as the relevant cooling process for the cosmic ray nuclei . We comment on the possible cosmic ray origin of the cosmic gamma ray background.

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