VARIATIONS OF THE SEA LEVEL MUON FLUX
Abstract
Studies of cosmic ray muons were made with a spectrograph comprising a solid iron magnet, Geiger counters and neon flash-tubes. The char acteristics of the instrument are described. Time variations in the vertical direction were studied and are attributed to variations of meteorological parameters. Momentum spectra were measured in the range 2 - 500 GeV/c for zenith angles between 77.5 and 90 degrees. The results are interpreted as showing that most muons in this range come from pions; an upper limit of 0.55 is placed on the K-to-pi ratio for proton-air nucleus collisions of 700 - 30,000 GeV. The positive-negative ratios confirm a near constant value of 1.2 over the range of muon energies 10 - 200 GeV; a likely explanation is that there is an increase in the fluctuations of multiplicity in high energy collisions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1963
- Accession Number
- AD0403765
Entities
People
- A. W. Wolfendale
- F. Ashton
- J. B. Pattison
Organizations
- Durham University