MUONS WITH Eth ≥ 1 GeV AND MASS COMPOSITION IN THE ENERGY RANGE 10 18 − 10 20 eV OBSERVED BY YAKUTSK EAS ARRAY
In this work the dependence of the ratio muon flux density to charged particle flux density at distances of 300, 600 m from the shower axis ρµ(300)/ρµ(300) and ρµ(600)/ρs(600) has been obtained. Separately the dependence ρµ(1000) on the energy in showers with E0 ≥ 10 18 eV is analysided. The compari...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
2004
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| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.254.9726 http://arxiv.org/pdf/astro-ph/0411683v1.pdf |
| Summary: | In this work the dependence of the ratio muon flux density to charged particle flux density at distances of 300, 600 m from the shower axis ρµ(300)/ρµ(300) and ρµ(600)/ρs(600) has been obtained. Separately the dependence ρµ(1000) on the energy in showers with E0 ≥ 10 18 eV is analysided. The comparison of experimental data with calculations by the QGSJET model in the case of primary proton, iron nuclei and gamma – ray is given. The conclusion that showers with E0 ≥ 3 · 10 18 eV can be formed by light nucleus with the pronounced fraction of protons and helium nucleus is made. It is not excluded that a small part of showers with E0 ≥ 10 19 eV can be initiated by primary gamma – rays. |
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