Monte Carlo Simulation in Extensive Air Showers for ultra- high energies

Abstract

In the present work, two simulation models AIRES Version 19.04.00 and CORSIKA5.62 code will be used to simulate the lateral distribution function (LDF) of the Cherenkov photon flux in the Extensive Air Showers (EAS). The simulation was performed using the high-energy hadronic interaction QGSJET98 model with the Haverah Park array. Two primary particles oxygen and proton with energies between 10¹⁵ and 10¹⁹ eV were simulated at various zenith angles like (0˚, 20˚, and 45˚). Depending on the Quick Fit function a parameterization of the density of the shower as a function of primary energy was reconstructed based on this simulation for primary proton and oxygen at several zenith angles. A comparison between the simulation Cherenkov photon flux LDF for primary proton and oxygen by Haverah Park, and a comparison of the calculated parameterization of the density of the shower measured on the Tunka EAS array. The light emitted in the shower propagated and attenuated to the ground, the exponential function is suitable to use for developing an EAS.  Through four parameters as a function of primary energy in the knee and ankle portions of the cosmic ray spectrum, the EAS array offers the chance to identify the particle responsible for the shower and determine its energy. For primary oxygen and proton, the extrapolation of approximate Cherenkov photon flux LDF for high energies was found.