Note on the primary energy spectrum

Abstract
The Mt. Chacaltaya air shower array in Bolivia has been used to collect data suitable for deriving the primary energy spectrum above 1014 eV. The spectrum was reported at the London Conference (Bradt et al. 1966). Since that time the array has been used to record showers above 107 particles in size. This note reports the results of the increased statistics on the upper end of the spectrum and also describes the results of some calculations designed to verify the validity of the method used. The spectrum reported previously is not changed appreciably by these considerations.

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