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Milke, J. Oehlschlaeger, J. R. Hoerandel, J. Wochele, J. Zabierowski, K. Bekk, K. Daumiller, K.-H. Kampert, K. Link, M. Bertaina, M. Finger, M. Ludwig, M. Melissas, M. Petcu, M. Roth, M. Wommer, N. Palmieri, O. Sima, P. Buchholz, P. Doll, P. L. Ghia, P. Luczak, R. Engel, R. Glasstetter, S. Ostapchenko, S. Over, The KASCADE-Grande Collaboration: W. D. Apel, T. Huege, T. Pierog, V. de Souza","submitted_at":"2012-06-18T06:03:55Z","abstract_excerpt":"The energy spectrum of cosmic rays between 10**16 eV and 10**18 eV, derived from measurements of the shower size (total number of charged particles) and the total muon number of extensive air showers by the KASCADE-Grande experiment, is described. The resulting all-particle energy spectrum exhibits strong hints for a hardening of the spectrum at approximately 2x10**16 eV and a significant steepening at c. 8x10**16 eV. These observations challenge the view that the spectrum is a single power law between knee and ankle. 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