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A Study of the Composition and Energy Spectra of Anomalous Cosmic Rays Using the Geomagnetic Field

Mewaldt, R. A. and Cummings, A. C. and Leske, R. A. and Selesnick, R. S. and Stone, E. C. and von Rosenvinge, T. T. (1996) A Study of the Composition and Energy Spectra of Anomalous Cosmic Rays Using the Geomagnetic Field. Geophysical Research Letters, 23 (6). pp. 617-620. ISSN 0094-8276. doi:10.1029/96GL00423.

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We use instrumentation on SAMPEX and the Earth's field as a magnetic rigidity filter in a “double spectrometer” approach to measure the composition and energy spectra of anomalous cosmic rays (ACRs) with Z≥6. A “pure” sample of anomalous cosmic ray C, N, O, and Ne is obtained, with no significant evidence for other species. The bulk of ACRs are now known to be singly-charged, and the geomagnetic filter allows their energy spectra to be measured to higher energies than before. The anomalous oxygen spectrum is found to extend to at least ∼100 MeV/nuc, which has implications for models of the acceleration of these ions.

Item Type:Article
Related URLs:
URLURL TypeDescription
Mewaldt, R. A.0000-0003-2178-9111
Cummings, A. C.0000-0002-3840-7696
Leske, R. A.0000-0002-0156-2414
Stone, E. C.0000-0002-2010-5462
Additional Information:© 1996 by the American Geophysical Union. (Received: August 28, 1995; revised: October 17, 1995; accepted October 23, 1995) This work was supported by NASA under NAS5-30704 & NAGW-1919. We appreciate discussions with A. C. Cummings.
Group:Space Radiation Laboratory
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1995-44
Issue or Number:6
Record Number:CaltechAUTHORS:20140624-140158949
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46480
Deposited By: Deborah Miles
Deposited On:24 Jun 2014 21:40
Last Modified:10 Nov 2021 17:26

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