EAS data at the mountain level and a shape of the CR spectrum beyond the break

Abstract

In the most works which deal with EAS the CR energy spectrum is deduced by means of the model defined dependence E 0 = a • N e α . An electron total number N e is evaluated by integration of the NKG-function f(r). This algorithm breaks down for young EAS with age parameter s ∼ 0. This work shows, that part of the young EAS becomes large in the range N e ≥ 10 7 , it cause to divergency of the N e integral for them and distorts the shape of EAS (CR) spectrum. A final analysis of the experimental data permits to conclude that EAS spectrum has local maximum at N e ∼ 10 9 , which results in a decrease of the EAS spectrum slope for N e ≥ 10 7 (inverse break or "knee"). A local maximum can arise because of the additional CR component in the range E 0 ≥ 10 PeV.