Solar Modulation of Cosmic-Ray Protons and He Nuclei
- Creators
- Garrard, T. L.
-
Stone, E. C.
- Vogt, R. E.
Abstract
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.
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.Attached Files
Published - 1973-12.pdf
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Additional details
- Eprint ID
- 44812
- Resolver ID
- CaltechAUTHORS:20140409-091634684
- NASA
- NGR 05-002-160
- Alfred P. Sloan Research Fellowship
- NASA Traineeship
- NSF Traineeship
- Created
-
2014-04-10Created from EPrint's datestamp field
- Updated
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2020-02-20Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1973-12