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Composition and Origin of Cosmic Rays pp 47–64Cite as

Significance of Ultraheavy Cosmic Rays

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Part of the book series: NATO ASI Series ((ASIC,volume 107))

Abstract

The experimental composition of ultraheavy cosmic rays is compared with that expected if the cosmic-ray source had a composition like that of the solar system, or that of specific nucleosynthesis processes--the r-process or the s-process. Observations in the interval 30 <Z <60 indicate that the cosmic-ray source is not principally r-process; rather, it looks like solar-system abundances modified by an acceleration bias correlated with the first ionization potential or modified by addition of s-process material. The abundance of actinides, which are results only of r-process, is not greatly enhanced in the cosmic rays.

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Author information

Authors and Affiliations

  1. Department of Physics, and the McDonnell Center for the Space Sciences, Washington University, St. Louis, Missouri, 63130, USA

    Martin H. Israel

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  1. Martin H. Israel
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Editor information

Editors and Affiliations

  1. Department of Physics and Astronomy, University of Iowa, USA

    Maurice M. Shapiro

  2. Institute for Astrophysics, University of Bonn, Germany

    Maurice M. Shapiro

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© 1983 D. Reidel Publishing Company

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Israel, M.H. (1983). Significance of Ultraheavy Cosmic Rays. In: Shapiro, M.M. (eds) Composition and Origin of Cosmic Rays. NATO ASI Series, vol 107. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7166-0_3

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  • DOI: https://doi.org/10.1007/978-94-009-7166-0_3

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-7168-4

  • Online ISBN: 978-94-009-7166-0

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