Study of cosmic ray composition in the knee region using multiple muon events in the Soudan 2 detector
- 1 May 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 55 (9) , 5282-5294
- https://doi.org/10.1103/physrevd.55.5282
Abstract
Deep underground muon events recorded by the Soudan 2 detector, located at a depth of 2100 m of water equivalent, have been used to infer the nuclear composition of cosmic rays in the “knee” region of the cosmic ray energy spectrum. The observed muon multiplicity distribution favors a composition model with a substantial proton content in the energy region – GeV/nucleus.
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