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Viscosity and inertia in cosmic-ray transport - Effects of an average magnetic fieldA generalized transport equation is introduced which describes the transport and propagation of cosmic rays in a magnetized, collisionless medium. The equation is valid if the cosmic-ray distribution function is nearly isotropic in momentum, if the ratio of fluid speed to fluid-flow particle speed is small, and if the ratio of collision time to time for change in the macroscopic flow is small. Five independent cosmic-ray viscosity coefficients are found, and the ralationship of this viscosity to particle orbits in a magnetic field is presented.
Document ID
19910048949
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Williams, L. L.
(Arizona Univ. Tucson, AZ, United States)
Jokipii, J. R.
(Arizona, University Tucson, United States)
Date Acquired
August 14, 2013
Publication Date
April 20, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 371
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
91A33572
Funding Number(s)
CONTRACT_GRANT: NAGW-1931
CONTRACT_GRANT: NSF ATM-86-18260
Distribution Limits
Public
Copyright
Other

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