Document Type : Original Article
Author
Faculty of Physics, Shahid Bahonar University of Kerman, Kerman, Iran
Abstract
Mass composition of cosmic rays and thus determining their sources, especially at high energies, is one of the most important parts of astroparticle physics and cosmic ray science which also can help to know the universe better. Many different methods have been used to estimate the mass composition so far, which the most important of them has been done by Pierre Auger observatory group. In present work, in order to estimate the mass composition of cosmic rays, two different ways (first using from muonic component and second, maximum atmospheric depth) are used which they have been done by comparing experimental data and simulated ones. An increase in the mass composition and low flux of photons is observed at high energies. The diagram of maximum atmospheric depth in terms of energy, which is produced by extrapolation and interpolation statistical method, raises and falls meaningfully that is compatible to the results of Pierre Auger observatory. At higher energies, the percentage of primary particles have a tendency to heavier particles and in low energies the primary particles are lighter. Also, the most important breaks in the energy spectrum of cosmic rays are seen.
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Main Subjects
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