Cosmic ray muon spectra at sea-level up to 10 TeV

Abstract The momentum spectra of muons in cosmic radiation have been measured with high statistics at sea-level with the DEIS spectrometer by a Kiel-Tel Aviv collaboration. The apparatus consists of solid iron magnets and spark chambers with magnetostrictive readout. The momentum spectra and the charge ratio of muons are obtained in the momentum range from GeV/ c to 10 TeV/ c in the angular range 78°–90°. The production spectrum was derived from the measured muon intensities.