Integral energy spectrum of primary cosmic rays at high energies

Abstract

The integral energy spectrum of primary cosmic rays has been obtained. In the energy range (2.4×103−1.1×105 GeV), the spectrum of all nuclei is consistent with a power law of indexγ=1.55±0.06 and the flux of all nuclei is:N(⩾E 0)⋍(5.1±1.8)×10−1×E 0 −1.55 particles/cm2 sterad. sec., whereE 0 is in GeV. The spectrum of primaryα-particles in the energy range (4.4×103−4.8×104) GeV is also consistent with a power law of indexγ=1.71±0.12 and the flux is:N(⩾E 0)=(4.2±1.4)×10−1×E 0 −1.71 , particles per cm2 sterad. sec, whereE 0 is in GeV.