L. Alexandrov, M. Brankova, I. Kirov, S.Cht. Mavrodiev, A. Mishev, J. Stamenov, S. Ushev
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences

Abstract. On the basis of simulated with CORSIKA code [1] events, the mathematical model of Cerenkov light lateral distribution function was precised. Extensive Air Showers (EAS) initiated by primary gamma-quanta with energies 3.10¹⁰ to 3.10¹² eV and primary protons with energies 3.10¹¹ to 3.10¹² eV were considered. By solving of an overdeterminated system of non-linear equations, we could analyse experimental data in attempt to determine the kind and the energy of the initiating primary particle and it's arrival direction.

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