Momentum spectra, charge ratio, and zenith-angle dependence of cosmic-ray muons
- 1 January 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 17 (1) , 98-113
- https://doi.org/10.1103/physrevd.17.98
Abstract
A large rotatable magnetic spectrometer was used to measure the sea-level energy spectra of cosmic-ray muons arriving at 30° and 75° zenith angle in the energy range 50-1700 GeV. The measured muon charge ratios and the ratio of the intensities at the two angles imply that the fraction of neutrons in the primary flux at energies above 1 TeV/nucleon is much larger than observed at lower energies and possibly as high as 25%.Keywords
This publication has 12 references indexed in Scilit:
- Determination of the Neutron-Proton Ratio in Primary Cosmic RaysPhysical Review Letters, 1977
- Charge ratio of ultra-high-energy cosmic-ray muonsPhysical Review D, 1975
- Muon charge ratio prediction from hadronic scalingPhysical Review D, 1975
- Relationship of the spectrum of sea level muons to that of the primary cosmic raysJournal of Physics A: Mathematical, Nuclear and General, 1974
- Interpretation of cosmic ray muon data in the light of results from the intersecting storage ring experimentJournal of Physics A: Mathematical, Nuclear and General, 1974
- Anomalous Muon and Hadron Charge Ratios in Secondary Cosmic RaysPhysical Review Letters, 1974
- A survey on the recent measurements of the absolute vertical cosmic-ray muon flux at sea levelIl Nuovo Cimento A (1971-1996), 1973
- Measurement of Cosmic-Ray Muon Charge Ratio at Sea Level Between Energies of 10 and 1500 GeVPhysical Review Letters, 1973
- A Measurement of Cosmic-Ray Rigidity Spectra above 5 GV/c of Elements from Hydrogen to IronThe Astrophysical Journal, 1973
- Energy Spectrum and Positive Excess of Muons in Cosmic-Ray Air ShowersPhysical Review B, 1961