Cosmic-ray muon spectrum up to 20 TeV at 89/sup 0/ zenith angle
Journal Article
·
· Phys. Rev. D; (United States)
The 800-ton cosmic-ray spectrograph (MUTRON) has been used to measure the sea-level energy spectrum of cosmic-ray muons arriving from 86/sup 0/ to 90/sup 0/ zenith angles in the momentum region of 100--20 000 GeV/c. The measured muon energy spectrum can be interpreted by using a cosmic-ray primary spectrum of (1.80 cm/sup -2/sec/sup -1/ sr/sup -1/ GeV/sup -1/ E/sup -2.70/ DE) (E in GeV) and a scaling model incorporating an increasing interaction cross section for meson production in hadron-hadron interaction. The muon charge ratio at energies up to 15 TeV in the same zenith-angle range has been measured. It shows a small enhancement with increasing energy. By combining both results we may conclude that the cosmic-ray primary particle composition stays the same up to about 100 TeV as that obtained by direct measurements in the energy range below 1 TeV.
- Research Organization:
- Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188, Japan
- OSTI ID:
- 5144089
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 29:1; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
COSMIC MUONS
COSMIC RADIATION
CROSS SECTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
LEVELS
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
MUONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RADIATIONS
SCALING LAWS
SEA LEVEL
SPECTRA
SPECTROMETERS
TEV RANGE
TEV RANGE 10-100
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
COSMIC MUONS
COSMIC RADIATION
CROSS SECTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
LEVELS
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
MUONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RADIATIONS
SCALING LAWS
SEA LEVEL
SPECTRA
SPECTROMETERS
TEV RANGE
TEV RANGE 10-100