Investigating the longitudinal development of EAS with ultra high energies

Abstract

The simulation of the extensive air showers was performed by investigating the longitudinal development parameters (N and Xmax) by using AIRES system version 19.04.0. The simulation was performed at the energy range (1018-1020 eV) for different primary particles (such as primary proton and iron nuclei) and different zenith angles. The longitudinal development curves of EAS are fitted using Gaussian function that gave a new parameters for different primary particles and different zenith angles at the energy range (1018-1020 eV). The comparison between the obtained results, the parameterized longitudinal development using Gaussian function that gave a new parameters for different primary particles with the experimental measurements (AUGER experiment) that gave a good agreement for primary proton and iron nuclei at the energy 1019 eV for θ = 0˚.