The Cosmic Ray Energy Spectrum between 1014 and
نویسندگان
چکیده
The energy spectrum of cosmic rays with primary energies between 10 14 eV and 10 16 eV has been studied with the CASA-MIA air shower array. The measured diierential energy spectrum is a power law (dj=dE / E ?) with spectral indices of 2:66 0:02 below approximately 10 15 eV and 3:00 0:05 above. A new method is used for measuring primary energy derived from ground based data in a compositionally insensitive way. In contrast with some previous reports, the \knee" of the energy spectrum does not appear sharp, 1 but rather a smooth transition over energies from 10 15 eV to 3:0 10 15 eV .
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