Journal article
THE MOMENTUM SPECTRUM OF MUONS UNDERGROUND
Journal of the Physical Society of Japan, Vol.17: Suppl. A-III
01/01/1962
DOI:
https://doi.org/10.7273/000007812
Abstract
A determination has been made of_ the absolute250unMde~rt:u~~O ~~~~ f 7 2 kg cm-2 m the range e h O spectrum at a dept • d f th· depth. btained with the spectrum calculate or is Good agreemen t is O f about fr om the sea level spectrum by making reasonable assump wns energy loss. are absorbed in the rock. The rejection of Introduction these events in sea-level measurements could The momentum spectrum of mesons at a cause a bias in the spectrum. Measurements given depth underground may be predic_ ted underground with a spectrometer capable of from the sea-level spectrum (or more precise resolving momenta appreciably greater than ly from the production spectrum deduced the momentum-loss in the rock can_ there from the observed sea-level spectrum) pr? fore also contribute useful information on vided the mechanism of momentum-loss m the sea-level spectrum. the intervening rock is known. By a co:11-Muons observed underground are, ? owev~r, parison of the underground spectrum ":1th frequently accompanied by secondaries of in the sea-level spectrum it is therefore possible teractions in the rock. In order to resolve to verify theoretical predictions of momentum a majority of such multiple events our spec loss as a function of momentum. Furth~r trometer uses Geiger counter tray~ at ~ve more, observations below ground do not_ dis levels to determine the muon traJ~ct~nes. criminate against mesons closely associated The apparatus was described and prehmmary with other air shower particles, since these results reported at the 1959 Moscow Confer * Now with the National Aeronautics and Space ence on Cosmic Raysu. The experiment was Administrations , Greenbelt, Meryland , U.S.A. . d t under 7 2 kg cm-2 of sandstone carne ou • .
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Details
- Title
- THE MOMENTUM SPECTRUM OF MUONS UNDERGROUND
- Creators
- M.J. Campbell - Washington State UniversityD.L. JaunceyH.S. MurdochH.D. RathgeberK.W. Ogilvie
- Publication Details
- Journal of the Physical Society of Japan, Vol.17: Suppl. A-III
- Academic Unit
- Laboratory for Atmospheric Research
- Identifiers
- 99901320138501842
- Language
- English
- Resource Type
- Journal article