Published 1973
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Interplanetary Diffusion Coefficients for Cosmic Rays
- Creators
- Cummings, A. C.
- Stone, E. C.
- Vogt, R. E.
Abstract
Information on the cosmic-ray diffusion coefficient, κ, derived from near-Earth observations of the solar modulation of galactic electron fluxes and from the near-Earth power spectra of the interplanetary magnetic field, has been used to study the heliocentric radial dependence of κ and to derive limits on the spatial extent of the solar modulation region. Representing κ as a separable function of radius r and rigidity, and assuming κ(r) ∝ r^n, we can place a limit on the power law exponent, n ≾ 1.2. The distance of the modulation boundary is a function of n, and, e.g., for n = 0, falls into the range of 6-25 AU.
Additional Information
© 1973 University of Colorado. Provided by the NASA Astrophysics Data System. This work 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 (Cummings) was a NASA Trainee during this work.Attached Files
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Additional details
- Eprint ID
- 44810
- Resolver ID
- CaltechAUTHORS:20140409-090931878
- NGR 05-002-160
- NASA
- Alfred P. Sloan Foundation
- NASA Traineeship
- Created
-
2014-04-10Created from EPrint's datestamp field
- Updated
-
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
- 1973-10