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About EAS size spectra and primary energy spectra in the knee region

S. V. Ter-Antonyan·L. S. Haroyan
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Abstract

Based on the unified analyses of KASCADE, AKENO, EAS-TOP and ANI EAS size spectra, the approximations of energy spectra of different primary nuclei have been found. Calculations were carried out using SIBYLL and QGSJET interaction models in 0.1-100 PeV primary energy range. The results point to existence of both rigidity-dependent steepening energy spectra at R=200-400 TV and an additional proton (neutron) component with differential energy spectrum (6.1+/-0.7)10^{-11}(E/Ek)^{-1.5} (m^2.s.sr.TeV)^{-1} before the knee Ek=2030+/-130 TeV and with power index g2=-3.1+/-0.05 after the knee.

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S. V. Ter-Antonyan, L. S. Haroyan. 2000-07-01. About EAS size spectra and primary energy spectra in the knee region. https://arxiv.org/abs/hep-ex/0003006

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