Cummings, A. C. and Stone, E. C. and Vogt, R. E.
(1973)
Interplanetary Diffusion Coefficients for Cosmic Rays.
In:
Proceedings of the 13th International Cosmic Ray Conference.
Vol.2.
Colorado Associated University Press
, Denver, CO, pp. 772-776.
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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.
| Item Type: | Book Section |
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| 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. |
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| Group: | Space Radiation Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NGR 05-002-160 | | Alfred P. Sloan Foundation | UNSPECIFIED | | NASA Traineeship | UNSPECIFIED |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Space Radiation Laboratory | 1973-10 |
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| Record Number: | CaltechAUTHORS:20140409-090931878 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140409-090931878 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 44810 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
SWORD User
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| Deposited On: | 10 Apr 2014 21:47 |
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| Last Modified: | 20 Feb 2020 14:33 |
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