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The Charge and Isotopic Composition of Z ≥ 10 Nuclei in the Cosmic Ray Source

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Origin of Cosmic Rays

Part of the book series: International Astronomical Union / Union Astronomique Internationale ((IAUS,volume 94))

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Abstract

Interstellar fragmentation provides the greatest contribution to the abundance of cosmic ray nuclei with Z = 17–25 observed at earth. The usual procedure to estimate the source abundance of these nuclei is to correct for this interstellar fragmentation using a propagation model and a set of fragmentation parameters for Fe nuclei and its products. Only a fraction of these fragmentation parameters have actually been measured and the accuracy of these as well as the semi empirical parameters used for the unmeasured cross sections is no better than ± 10–15%. As a result the actual source abundances of these nuclei can only be deduced to an accuracy of ± 2–3% of the Fe abundance.

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References

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Author information

Authors and Affiliations

  1. Space Science Center, University of New Hampshire, Durham, N. H., 03824, USA

    W. R. Webber

Authors
  1. W. R. Webber
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Editor information

Editors and Affiliations

  1. University of Bologna and Istituto di Radioastronomia, CNR, Bologna, Italy

    Giancarlo Setti

  2. Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Bologna, Italy

    Gianfranco Spada

  3. Physics Department, University of Durham, UK

    Arnold W. Wolfendale

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© 1981 IAU

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Webber, W.R. (1981). The Charge and Isotopic Composition of Z ≥ 10 Nuclei in the Cosmic Ray Source. In: Setti, G., Spada, G., Wolfendale, A.W. (eds) Origin of Cosmic Rays. International Astronomical Union / Union Astronomique Internationale, vol 94. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8475-2_4

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  • DOI: https://doi.org/10.1007/978-94-009-8475-2_4

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-277-1272-1

  • Online ISBN: 978-94-009-8475-2

  • eBook Packages: Springer Book Archive

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