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Measurements of ultraheavy cosmic rays with HEAO-3The HEAO-3 Heavy Nuclei Experiment has measured abundances of elements from Ar-18 to U-92 in the cosmic rays. The results on the ultraheavy elements, those with atomic numbers greater than 30, indicate that the source of the cosmic rays contain a mixture of r-process and s-process material similar to that found in the solar system. This result is at variance with previous indications that the sources are greatly enhanced with freshly synthesized r-process material. Apparent discrepancies between the results and the accepted solar-system abundance have led to a reexamination of data on photospheric abundances of Ge and Pb, resulting in suggested reductions in their values.
Document ID
19870014823
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Binns, W. R. (Washington Univ. Saint Louis, MO, United States)
Israel, M. H. (Washington Univ. Saint Louis, MO, United States)
Klarmann, J. (Washington Univ. Saint Louis, MO, United States)
Garrard, T. L. (Washington Univ. Saint Louis, MO, United States)
Stone, E. C. (Washington Univ. Saint Louis, MO, United States)
Waddington, C. J. (Minnesota Univ. Minneapolis., United States)
Date Acquired
September 5, 2013
Publication Date
June 1, 1987
Publication Information
Publication: NASA Goddard Space Flight Center, Greenbelt, Md. Essays in Space Science
Subject Category
Space Radiation
Accession Number
87N24256
Funding Number(s)
CONTRACT_GRANT: NGR-26-008-001
CONTRACT_GRANT: NAS8-27978
CONTRACT_GRANT: NAG8-502
CONTRACT_GRANT: NGR-05-002-160
CONTRACT_GRANT: NAG8-498
CONTRACT_GRANT: NGR-24-005-050
CONTRACT_GRANT: NAG8-500
CONTRACT_GRANT: NAS8-27976
CONTRACT_GRANT: NAS8-27977
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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