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

Klarmann, J. and Binns, W. R. and Israel, M. H. and Margolis, S. H. and Garrard, T. L. and Stone, E. C. and Brewster, N. R. and Fixsen, D. J. and Waddington, C. J. (1985) Abundances of 'secondary' elements among the ultraheavy cosmic rays: Results from HEAO-3. In: Proceedings of the 19th International Cosmic Ray Conference. Vol.2. Goddard Space Flight Center , Green Belt, MD, pp. 279-282.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Binns, W. R.0000-0001-6110-3407
Israel, M. H.0000-0002-8104-208X
Stone, E. C.0000-0002-2010-5462
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.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
NASANGR 24-005-050
NASANGR 26-008-001
Subject Keywords:Abundance, Cerenkov Radiation, Cosmic Rays, Heavy Nuclei, Isotopes, Cerenkov Counters, Heao 3, Resolution, Spallation, Wave Propagation
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1985-21
Record Number:CaltechAUTHORS:20140430-142415830
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45370
Deposited By: Joy Painter
Deposited On:30 Apr 2014 22:39
Last Modified:09 Mar 2020 13:18

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