Absolute Sea Level Muon Spectrum near Equator in the Momentum Range 0.32–3 GeV/c

A study has been made on the differential spectrum of single muons near the geomagnetic equator (12°N) in the momentum range 0.32–3 GeV/c by using the differential range spectrograph results. The corrected experimental spectrum has been compared with those of other workers determined at low high and high latitudes. The present results agree with the theoretical spectra calculated after Barrett et al. and Olbert for the same location within 10% above muon momentum 1 GeV/c. The corrections for the geomagnetic and atmospheric latitude effects have been applied to our low latitude spectrum by using the theory of Olbert and Jabs to explain the deviation of the Kiel muon spectrum of Allkofer and Knoblich from ours.