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- Title
Nuclear Composition of 1- to 20-PeV Primary Cosmic Rays According to Lateral Features of the Electron–Photon Component of All Extensive Air Showers and of Extensive Air Showers Accompanying High-Energy Gamma Rays and Hadrons in X-Ray Emulsion...
- Authors
Nesterova, N. M.; Pavlyuchenko, V. P.; Chubenko, A. P.; Shaulov, S. B.
- Abstract
Data from the Tien Shan array Adron on the dependence of the lateral distributions of the electron -- photon component (age parameter S) in extensive air showers of cosmic rays on the number of electrons, N[SUBe], which is a quantity that characterizes the primary-nucleus energy E[SUB0], are subjected to a comparative analysis. The distributions in question are given both for all showers and for showers accompanying high-energy gamma rays and hadrons in x-ray emulsion chambers. According to calculations, events associated with the latter are generated predominantly by primary protons, and this makes it possible to assess their role at various values of E[SUB0]. The distributions with respect to S suggest a significant fraction of light nuclei, predominantly protons, in the region after the knee in the spectrum for N[SUBe] > 10[SUP6], at least up to N[SUBe] = 5.6 × 10[SUP6](E[SUB0]∼10PeV).
- Subjects
ELECTRON-phonon interactions; COSMIC rays
- Publication
Physics of Atomic Nuclei, 2003, Vol 66, Issue 5, p847
- ISSN
1063-7788
- Publication type
Article
- DOI
10.1134/1.1576458