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Il Nuovo Cimento (1955-1965)

, Volume 5, Issue 6, pp 1679–1684 | Cite as

The flux of primary cosmic ray α-particles over Sardinia

  • H. H. Aly
  • C. J. Waddington
Article

Summary

The flux ofα-particles in the primary cosmic radiation has been determined over Sardinia, geomagnetic latitude,λ, 41° N. A nuclear emulsion technique was employed. The result obtained of 72 ± 9α-particles/m2·sr·s, was considerably higher than the only other directly comparable experimental result, but was in good agreement with the predicted value. The implications of this result are discussed.

Riassunto

Si è determinato sulla Sardegna (latitudine geomagnetica,λ, 41e N) il flusso delle particelleα nella radiazione cosmica primaria, servendosi di una tecnica a base di emulsioni nucleari. Il risultato ottenuto ((72±9) particelleα/m2·sr·s) è stato considerevolmente più elevato del solo altro risultato sperimentale confrontabile col nostro, ma si trova in buon accordo col valore previsto. Si discutono le conseguenze implicite in tale risultato.

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References

  1. (1).
    C. J. Waddington:Nuovo Cimento,3, 930 (1956).CrossRefGoogle Scholar
  2. (2).
    H. Fay:Zeits. f. Naturf.,10 a, 572 (1955).ADSGoogle Scholar
  3. (3).
    J. A. Simpson, K. B. Fenton, J. Katzman andD. C. Rose:Phys. Rev.,102, 1648 (1956).ADSCrossRefGoogle Scholar
  4. (4).
    P. H. Fowler andC. J. Waddington:Phil. Mag.,1, 637 (1956).ADSCrossRefGoogle Scholar
  5. (5).
    A. De Marco, A. Milone andM. Reinharz:Nuovo Cimento,3, 1150 (1956).CrossRefGoogle Scholar
  6. (6).
    C. J. Waddington:Phil. Mag.,1, 105 (1956).ADSCrossRefGoogle Scholar
  7. (7).
    M. V. K. Appa Rao, R. R. Daniel andK. A. Neelakantan:Proc. Ind. Acad.,43, 181 (1956).Google Scholar
  8. (8).
    M. F. Kaplon, J. H. Noon andG. W. Racette:Phys. Rev.,95, 1408 (1954).ADSCrossRefGoogle Scholar
  9. (9).
    P. H. Fowler, R. R. Hillier andC. J. Waddington:Phil. Mag.,2, 293 (1957).ADSCrossRefGoogle Scholar
  10. (10).
    F. S. Jory:Phys. Rev.,102, 1167 (1956).ADSCrossRefGoogle Scholar

Copyright information

© Società Italiana di Fisica 1957

Authors and Affiliations

  • H. H. Aly
    • 1
  • C. J. Waddington
    • 1
  1. 1.H. H. Wills Physical LaboratoryBristolEngland

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