MG13 - Talk detail

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Abstract

The KASCADE-Grande air shower experiment, located at KIT-Karlsruhe, Germany, consists of a large scintillator array for measurements of charged particles, N_{ch}, and of an array of shielded scintillation counters used for muon counting, N_{mu}. KASCADE-Grande is optimized for cosmic ray measurements in the energy range 10^{16} eV - 10^{18} eV, thereby enabling the verification of a possible iron knee expected at approximately 10^{17} eV and contributing to our understanding of the transition from galactic to extragalactic cosmic rays. Following earlier studies of the all-particle and the elemental spectra reconstructed in the knee energy range from KASCADE data, we have now extended these measurements to beyond 10^{17} eV. By analysing the two-dimensional shower size spectrum N_{ch} vs N_{mu}, we reconstruct the all-particle energy spectrum as well as the spectra of different mass groups by various analysis methods. The techniques will be introduced and the obtained results will be presented.

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