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Solar Modulation of Cosmic-Ray Protons and He Nuclei

Garrard, T. L. and Stone, E. C. and Vogt, R. E. (1973) Solar Modulation of Cosmic-Ray Protons and He Nuclei. Proceedings of the 13th International Cosmic Ray Conference . pp. 732-737.

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We present the results of a detailed, quantitative study of the solar modulation of cosmic-ray protons and He nuclei. The study is based on: (a) observations over the 1966 to 1970 period with balloon- and satellite-borne instruments, (b) numerical solutions of the cosmic-ray transport equation, and (c) propagation parameters derived from studies of near-Earth and interstellar spectra of cosmic-ray electrons. We find that consistent, quantitatively satisfactory results may be obtained with a model of solar modulation which uses a diffusion coefficient separable into functions of heliocentric radius and particle rigidity and in which adiabatic deceleration has a dominant role in shaping the low-energy spectra of nuclei near 1 AU.

Item Type:Article
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Stone, E. C.0000-0002-2010-5462
Additional Information:© 1973 University of Colorado. Provided by the NASA Astrophysics Data System. This work was supported by the National Aeronautics and Space Administration Grant NGR 05-002-160. One of us (Stone) was an Alfred P. Sloan research fellow, and another (Garrard) a NASA and NSF Trainee during this work. Space Radiation Laboratory SRL ID #: 1973-12.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
Alfred P. Sloan Research FellowshipUNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1973-12
Record Number:CaltechAUTHORS:20140409-091634684
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ID Code:44812
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Deposited On:10 Apr 2014 21:50
Last Modified:20 Feb 2020 14:33

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