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Studies of Low Energy Cosmic Rays - The Anomalous Component

Webber, W. R. and Cummings, A. C. and Stone, E. C. (1983) Studies of Low Energy Cosmic Rays - The Anomalous Component. In: 18th International Cosmic Ray Conference, Bangalore, India, August 22 to September 3, 1983. Vol.9. Tata Institute of Fundamental Research , Bombay, India, pp. 95-98.

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Data from the cosmic ray subsystem on the Voyager spacecraft is used to measure the spectra of He, C, N, O, and Ne with about 4-124 MeV/nuc (for O) near 1 AU. By subtracting both a low-energy solar/interplanetary component and the high-energy galactic component the energy spectra of the anomalous cosmic-ray species He, N, O, and Ne have been determined. It is suggested that the shapes of these spectra carry information about the charge state of the particles and the rigidity dependence of the diffusion coefficient. For similar power-law source spectra at the boundary of the modulation region, the location of features in the energy spectra indicates that the anomalous particles are singly ionized.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Cummings, A. C.0000-0002-3840-7696
Stone, E. C.0000-0002-2010-5462
Additional Information:© 1983 INSDOC. Provided by the NASA Astrophysics Data System. We thank R. E. Vogt for useful discussions and for his efforts as CRS Principal Investigator. We also thank R. A. Mewaldt for many helpful suggestions. This wor~ was supported in part by NASA under contract NAS 7-918 and grants NAGW-200 and NGR 05-002-160.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
Subject Keywords:Astronomical Spectroscopy, Cosmic Rays, Energy Spectra, Helium, Oxygen, Radiant Flux Density, Anomalies, Ionization Potentials, Milky Way Galaxy, Neon, Nitrogen, Solar Cosmic Rays, Spectral Energy Distribution, Spectrum Analysis
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Space Radiation Laboratory1983-25
Record Number:CaltechAUTHORS:20140429-144131428
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45323
Deposited By: Joy Painter
Deposited On:29 Apr 2014 21:54
Last Modified:20 Feb 2020 14:33

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