Study of cosmic ray composition in the knee region using multiple muon events in the Soudan 2 detector

S. M. Kasahara, W. W.M. Allison, G. J. Alner, D. S. Ayres, W. L. Barrett, C. R. Bode, P. M. Border, C. B. Brooks, J. H. Cobb, D. J.A. Cockerill, R. J. Cotton, H. Courant, D. M. DeMuth, B. Ewen, T. H. Fields, H. R. Gallagher, M. C. Goodman, R. W. Gran, R. N. Gray, K. JohnsT. Kafka, W. Leeson, P. J. Litchfield, N. P. Longley, M. J. Lowe, W. A. Mann, M. L. Marshak, E. N. May, R. H. Milburn, W. H. Miller, L. Mualem, A. Napier, W. Oliver, G. F. Pearce, E. A. Peterson, L. E. Price, D. M. Roback, K. Ruddick, D. J. Schmid, J. Schneps, M. H. Schub, R. V. Seidlein, M. A. Shupe, N. Sundaralingam, J. L. Thron, H. J. Trost, J. L. Uretsky, V. Vassiliev, G. Villaume, S. P. Wakely, D. Wall, S. J. Werkema, N. West

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


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 languageEnglish (US)
Pages (from-to)5282-5294
Number of pages13
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number9
StatePublished - 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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