1/f Fluctuations in Cosmic Ray Extensive Air Showers
The fluctuations of the particle density distributions in extensive air showers have been studied at ground level. In order to achieve meaningful statistics, the interaction of cosmic rays with the earth atmosphere has been simulated by means of the CORSIKA Monte Carlo code. It is shown that the fluctuations of the particle density distributions as a function of the polar angle have features typical of a 1/f noise. The sample is then analysed in order to study its scaling behaviour and we find that it can be parametrized by means of a universal multifractal approach.
KeywordsSecondary Particle Power Spectrum Density Earth Atmosphere Electromagnetic Shower Primary Photon
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