All-particle primary energy spectrum in the 3-200 PeV energy range
- GARYAKA, A. P.
- MARTIROSOV, R. M.
- TER-ANTONYAN, S. V.
- ERLYKIN, A. D.
- NIKOLSKAYA, N. M.
- GALLANT, Yves
- JONES, L. W.
- PROCUREUR, J.
DOIAbstract
We present all-particle primary cosmic-ray energy spectrum in the 3-200 PeV energy range obtained by a multi-parametric event-by-event evaluation of the primary energy. The results are obtained on the basis of an expanded EAS dataset detected at mountain level (700 g/cm^2) by the GAMMA experiment. The energy evaluation method has been developed using the EAS simulation with the SIBYLL interaction model taking into account the response of GAMMA detectors and reconstruction uncertainties of EAS parameters. Nearly unbiased (<5%) energy estimations regardless of a primary nuclear mass with an accuracy of about 15-10% in the 3-200 PeV energy range respectively are attained. An irregularity ('bump') in the spectrum is observed at primary energies...
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