Investigation of ultra-high energy cosmic ray mass composition by the ground based detectors

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Doostmohammadi S.

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ISSN: 2588-4824

Journal Paper

Paper Information

Journal: Iranian Journal of Physics Research Year:2023 | Volume: | Issue: Page(s): 123-127

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Title

Investigation of ultra-high energy cosmic ray mass composition by the ground based detectors

Author(s)

Doostmohammadi S. | Issue Writer Certificate

Keywords

cosmic rayQ4

extensive air showerQ4

mass compositionQ4

maximum atmospheric depthQ4

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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