A recalculation of the upper end of the cosmic ray energy spectrum

Abstract

The upper end of the cosmic ray energy spectrum is re-assessed using data obtained from the Sydney giant air shower recorder. The effects of after-pulsing are incorporated into the interpretation, giving rise to a spectrum somewhat steeper than previously published. It is found that the resulting differential slope of -3.35+or-0.15 is close to the steepest of other experiments, agreeing well with the values of Haverah Park and Mount Chacaltaya.