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On the origin of the charge spectrum of the primary cosmic radiation

  • Composition of the Primary Radiation
  • Published:
Il Nuovo Cimento (1955-1965)

Conclusion

We find that we can account quite well for the observed primary charge distribution by assuming (quite artificially) a model in which the original radiation consists only of iron (*). After about three mean free paths (6 g/cm2) a charge distribution is obtained which resembles very much the observed values. The good agreement is possible only if one uses results on «p » and «α» fragments obtained from meteorite measurements, and if one uses the smaller fragmentation probabilities obtained by the Bristol group for Li, Be and B.

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Refeeences

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Authors and Affiliations

  1. University of Maryland — College Park, Maryland

    S. F. Singer

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  1. S. F. Singer
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Additional information

This work has been supported in part by the Air Force Office of Scientific Research under Contract AF 18(600)-1038.

On the other hand Ginzburg and Fradkin [14] consider that they can explain the primary charge spectrum without an original enhancement of the heavies; however they useN L:N M⩽0.1 and large values for the relevant fragmentation probabilities. Therefore their conclusion is not surprising.

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Singer, S.F. On the origin of the charge spectrum of the primary cosmic radiation. Nuovo Cim 8 (Suppl 2), 549–555 (1958). https://doi.org/10.1007/BF02962572

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  • DOI: https://doi.org/10.1007/BF02962572

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