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 [Formula presented]–[Formula presented] GeV/nucleus.
Original language | English (US) |
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Pages (from-to) | 5282-5294 |
Number of pages | 13 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 55 |
Issue number | 9 |
DOIs | |
State | Published - 1997 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)