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New evidence for geomagnetically trapped anomalous cosmic rays

Cummings, J. R. and Cummings, A. C. and Mewaldt, R. A. and Selesnick, R. S. and Stone, E. C. (1993) New evidence for geomagnetically trapped anomalous cosmic rays. Geophysical Research Letters, 20 (18). pp. 2003-2006. ISSN 0094-8276. http://resolver.caltech.edu/CaltechAUTHORS:20140304-145352097

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Abstract

We report new observations of ≥ 15 MeV/nuc trapped heavy ions with Z ≥ 2, made on the polar-orbiting SAMPEX spacecraft in late 1992 and early 1993. A trapped population that includes He, N, O, and Ne is found to be located at L ≈ 2. We conclude that the observed N, O, and Ne ions are “anomalous” cosmic rays, trapped by the mechanism proposed by Blake and Friesen. While it is not expected that this mechanism would also trap anomalous He, the characteristics of the trapped He population are generally consistent with those of N, O, and Ne.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/93GL01961 DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/93GL01961/abstractPublisherArticle
Additional Information:© 1993 American Geophysical Union. Received: June 21, 1993; Accepted: July 14, 1993. This work was supported by NASA under contract NAS5-30704 and grant NAGW-1919. We appreciate conversations with J. H. Adams, Jr., J. B. Blake, and A. J. Tylka.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAS5-30704
NASANAGW-1919
Record Number:CaltechAUTHORS:20140304-145352097
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140304-145352097
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44131
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:05 Mar 2014 02:41
Last Modified:05 Mar 2014 02:41

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