A model of the secondary radiation belt
- Creators
- Selesnick, R. S.
- Looper, M. D.
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Mewaldt, R. A.
Abstract
Products of nuclear reactions between primary radiation belt protons and constituents of the tenuous upper atmosphere form a collocated secondary radiation belt. A calculation of the time-dependent secondary intensity provides a model specification of this environmental component for low- and medium-altitude satellite orbits. It is based on an earlier model of the radiation belt protons, the novel feature being a determination of the secondary source function from nuclear reaction cross sections. All long-lived secondary products are included, isotopes of H and He being dominant while the heavier Li to O isotopes are present at relatively low levels. Secondary protons are shown to be a minor correction to the primary radiation belt.
Additional Information
Copyright 2008 by the American Geophysical Union. Received 8 July 2008; revised 22 September 2008; accepted 30 September 2008; published 29 November 2008. The work at Aerospace was supported by NSF grant ATM-0518190 under the National Space Weather Program. The work at Caltech was supported by NASA grants NNG04GB55G and NAG5-12929. Zuyin Pu thanks Reiner Friedel and Xinlin Li for their assistance in evaluating this paper.Attached Files
Published - SELjgra08.pdf
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Additional details
- Eprint ID
- 12763
- Resolver ID
- CaltechAUTHORS:SELjgra08
- ATM-0518190
- National Science Foundation
- NNG04GB55G
- NASA
- NAG5-12929
- NASA
- Created
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2008-12-22Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory