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Published August 1985 | Version Published
Book Section - Chapter Open

Abundances of 'secondary' elements among the ultraheavy cosmic rays: Results from HEAO-3

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Abstract

The HEAO-3 Heavy Nuclei Experiment has measured elemental abundances of ultraheavy cosmic rays near earth. The elements with atomic number (Z) in the intervals 44≤Z≤48 and 62≤Z≤74 arriving at earth are expected to have significant secondary components. However, their source abundances are unlikely to be low enough to warrant treating them as pure secondaries. Our results are consistent with solar system abundances modified for first ionization potential with possibly some enhancement of tho r to s ratio.

Additional Information

© 1985 INSDOC. Provided by the NASA Astrophysics Data System. This work was supported in part by NASA under contracts NAS8-27976,77,78 and grants NGR 05-002-160, 24-005-050, 26-008-001, and NAG8-448.

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45370
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CaltechAUTHORS:20140430-142415830

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http://adsabs.harvard.edu/abs/1985ICRC....2..127K (URL)

Funding

NASA
NAS8-27976
NASA
NAS8-27977
NASA
NAS8-27978
NASA
NGR 05-002-160
NASA
NGR 24-005-050
NASA
NGR 26-008-001
NASA
NAG8-448

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2014-04-30
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2020-03-09
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Space Radiation Laboratory
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Space Radiation Laboratory
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1985-21