Unusual and multicore extensive air showers

Abstract

Unusual and multicore extensive air showers are detected in some experiments. Study of these kinds of showers is an important issue in nuclear collisions at high energies and need to be interpreted by hadronic interaction models. In the work, taking into account results Sleptsova et al. of which emphasized shower size variations at energies above [Formula: see text][Formula: see text]eV, and also by using of the auger experimental data, some characteristics of multicore events are investigated. Intense nuclear variations are seen in energy range of [Formula: see text]–[Formula: see text][Formula: see text]eV, and nuclear distinctive properties of multicore showers relative to normal showers are shown.