The energy spectrum of primary cosmic rays above 1012eV
- 1 July 1974
- journal article
- Published by IOP Publishing in Journal of Physics A: Mathematical, Nuclear and General
- Vol. 7 (10) , 1213-1221
- https://doi.org/10.1088/0305-4470/7/10/014
Abstract
Recent direct experimental measurements of the primary proton spectrum have given a power law with differential slope gamma d approximately -2.75 for energy less than about 1012 eV. Extrapolation of this spectrum gives intensities of the order of those derived from extensive air showers in the region of 1018-1019 eV. The data from a variety of experiments which had previously indicated intensities significantly above this spectrum, particularly in the range 1014-1016 eV, are re-examined critically. It is concluded that the intensities are indeed higher and that a single exponent is quite inadequate to describe the spectral range 1010-1020 eV.Keywords
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