About chemical composition of the primary cosmic radiation at ultra-high energies

Details About chemical composition of the primary cosmic radiation at ultra-high energies About chemical composition of the primary cosmic radiation at ultra-high energies

2009-12-08

arxiv.org/abs/0912.1478v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 2 figure, 31 ICRC

Scientific paper

The fluxes of electrons, positrons, gammas, Cherenkov photons and muons in individual extensive air showers induced by the primary protons and helium, oxygen and iron nuclei at the level of observation have been estimated with help of the code CORSICA 6.616. The comparison show that the values of the function Xi**2 per one degree of freedom changes from 1.1 for iron nuclei to 0.9 for primary protons. As this difference is small all readings of detectors of the Vavilov-Cherenkov radiation have been used. At last, readings of underground detectors of muons with energies above 1 GeV have been exploited to make definite conclusion about chemical composition.

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