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Composition and energy spectra of the heavy primary cosmic radiation

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Il Nuovo Cimento (1955-1965)

Summary

Results of our investigations into the cosmic-ray heavy primary charge and energy spectra at Neepawa, Canada (geomagnetic latitude 61° N), during a time of high solar activity (August 1958) are presented. The total heavy-primary differential energy spectrum is shown to have the same shape as the contemporaneous α-particle spectrum but theL/M ratio shows an increase from (0.28±0.05) at kinetic energies over 1.5 GeV/nucleon to (0.43 ± 0.07) at energies less than 1.0 GeV/nucleon.

Riassunto

Si espongono i risultati delle nostre ricerche sulla carica dei primari pesanti dei raggi cosmici e gli spettri d’energia a Neepawa, Canada (latitudine geomagnetica 61° N), durante un periodo di intensa attivita solare (Agosto 1958). Si mostra che lo spettro diflerenziale totale dei primari pesanti ha la stessa forma del contemporaneo spettro delle particelle α, però il rapporto L/M presenta un aumento da (0.28±0.05) ad energie cinetiche superiori a 1.5 GeV/micleone a (0.43±0.07) ad energie inferiori a 1.0 GeV/nucleone.

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Author notes

  1. A. Debenedetti

    Present address: Cavendish Laboratory, Cambridge

Authors and Affiliations

  1. Department of Nuclear Physics, University of Oxford, Oxford

    F. Foster & A. Debenedetti

Authors
  1. F. Foster
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  2. A. Debenedetti
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Foster, F., Debenedetti, A. Composition and energy spectra of the heavy primary cosmic radiation. Nuovo Cim 28, 1190–1199 (1963). https://doi.org/10.1007/BF02750037

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  • DOI: https://doi.org/10.1007/BF02750037

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