Table of Contents
Journal of Astrophysics
Volume 2014, Article ID 492814, 6 pages
http://dx.doi.org/10.1155/2014/492814
Research Article

Extension of Cherenkov Light LDF Approximation for Yakutsk EAS Array

1Department of Physics, College of Science, The University of Mustansiriyah, 10052 Baghdad, Iraq
2Institute of Nano Electronic Engineering, University of Malaysia Perlis, 01000 Kangar, Malaysia

Received 27 May 2014; Accepted 24 July 2014; Published 14 August 2014

Academic Editor: Luciano Nicastro

Copyright © 2014 A. A. Al-Rubaiee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The simulation of the Cherenkov light lateral distribution function (LDF) in extensive air showers (EAS) was performed using CORSIKA code for configuration of Yakutsk EAS array at high energy range for different primary particles (p, Fe, and O2) and different zenith angles. Depending on Breit-Wigner function a parameterization of Cherenkov light LDF was reconstructed on the basis of this simulation as a function of primary energy. A comparison of the calculated Cherenkov light LDF with that measured on the Yakutsk EAS array gives the possibility of identification of the particle initiating the shower and determination of its energy in the knee region of the cosmic ray spectrum. The extrapolation of approximated Cherenkov light LDF for high energies was obtained for primary proton and iron nuclei.