Modeling and parameterization of the spatial distribution of Čerenkov light from extensive air showers

Abstract

Spatial distribution of Čerenkov radiation of extensive air shower particles with energies 10 13 -10 16 eV is simulated by the CORSIKA code for conditions and configuration of the Tunka-25 facility. Based on the calculated results, sets of approximating functions are constructed for different primary particles and zenith angles. A comparison of the calculated spatial distribution functions of Čerenkov light with the functions measured on the Tunka-25 facility demonstrates the feasibility of identification of the particle initiating the shower and determination of its energy in the vicinity of the bend point of the cosmic ray spectrum.

Study of Cherenkov light lateral distribution function around the knee region in extensive air showers

“…The simulation of Cherenkov light LDF from EAS was performed using the In order to parameterize the simulated Cherenkov light LDF, the function of four parameters a, b, σ, and r 0 suggested in [7] was used. This function was normalized by introducing the coefficient C = 10 3 m -1 providing the correct dimension of Q and consistent with the dimensions of the parameters from [9]:…”

Extension of Cherenkov Light LDF Parametrization for Tunka and Yakutsk EAS Arrays

“…where C is the normalization constant (Al-Rubaiee et al 2005), R is the distance from the core shower in metre unit and α, β, σ and κ are parameters of Cherenkov light LDF. The estimation of Cherenkov light density was performed in the energy range 10 13 -10 16 eV for different primary particles and different zenith angles.…”

Spatial distribution of Čerenkov light from extensive air showers

“…The following approximation of the spatial distribution function was constructed in [9] on the basis of a fourparameter function [15]:…”

“…Calculations of the spatial distribution function of Čerenkov radiation of extensive air showers carried out in [9] were focused on a comparison with the results obtained with the Tunka-25 facility [10]. The calculated results demonstrated that the primary particle could be identified and its energy could be estimated with not too large error based on the constructed approximation for the spatial distribution function.…”

“…The calculated results demonstrated that the primary particle could be identified and its energy could be estimated with not too large error based on the constructed approximation for the spatial distribution function. The present work gives the results of application of the method of reconstructing the type and energy of the primary particle that generated the extensive air shower proposed in [9]. The method is based on the signal amplitudes of Čerenkov light registered with the Tunka-25 facility [1- 4,10].…”