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Author Hansen, P. J. ♦ Harrold, B. G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HYDROMAGNETIC WAVES ♦ ABSORPTION ♦ ALFVEN WAVES ♦ PLASMA SHEET ♦ BOUNDARY LAYERS ♦ INHOMOGENEOUS PLASMA ♦ PLASMA DENSITY
Abstract In light of a recent demonstration of the general nonexistence of a singularity at the Alfven resonance in cold, ideal, linearized magnetohydrodynamics, the authors examine the effects of a small density gradient parallel to uniform, open ambient magnetic field lines. To lowest order, energy deposition is quantitatively unaffected but occurs continuously over a thickened layer. This effect is illustrated in a numerical analysis of a plasma sheet boundary layer model with perfectly absorbing boundary conditions. Consequences of the results are discussed, both for the open field line approximation and for the ensuing closed field line analysis. 36 refs., 8 figs.
ISSN 01480227
Educational Use Research
Learning Resource Type Article
Publisher Date 1994-02-01
Publisher Place United States
Journal Journal of Geophysical Research
Volume Number 99
Issue Number A2


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