The spatial characteristics of low energy muons in cosmic ray showers

Previous work on the muon component of extensive air showers is described and reviewed with particular reference to the muon heights of origin with respect to the main cascade. Thu mechanical and operating details of a specialist experiment to determine the heights of origin of muons are described together with the results from detailed computer simulations which are tailored to resemble the characteristics of the equipment. The raw experimental data are examined in detail as a precursor to interpreting the data from the equipment. The final results from the experiment are given in detail and their relevance to air shower cascade development discussed. Suggestions are made for future work in this and related fields.