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

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

2000-03-06

arxiv.org/abs/hep-ex/0003006v3

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages, 2 figures, Submitted to APh

Scientific paper

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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