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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. doi:10.1029/93GL01961.

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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
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URLURL TypeDescription DOIArticle
Cummings, A. C.0000-0002-3840-7696
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
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
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Issue or Number:18
Record Number:CaltechAUTHORS:20140304-145352097
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44131
Deposited By: Tony Diaz
Deposited On:05 Mar 2014 02:41
Last Modified:10 Nov 2021 16:48

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