The Kolar Gold Fields extensive air shower experiment

Abstract

Measurements have been made on high-energy muons (>220 GeV and >640 GeV) in extensive air showers in the size range 10⁵–10⁷ particles. Results on the energy spectrum, lateral spread (for E_μ > 220 GeV), and the dependence of the total number of muons on the shower size are given. The relation between the number of muons (N_μ) and the shower size (N) can be expressed as[Formula: see text]Assuming an exponential lateral distribution of high-energy muons, the average lateral spread of muons of energy >220 GeV has been found to be ~40 m.The results are compared with the predictions of the calculations done by Murthy et al. (1967).