
Theory of plasma transport induced by low‐frequency hydromagnetic waves
Author(s) -
Chen Liu
Publication year - 1999
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/1998ja900051
Subject(s) - physics , plasma , convection , flux tube , magnetopause , magnetohydrodynamics , computational physics , gyroradius , magnetic field , nonlinear system , mechanics , classical mechanics , magnetic flux , quantum electrodynamics , atomic physics , magnetosphere , quantum mechanics
On the basis of the quasi‐linear limit of the nonlinear gyrokinetic equations we have derived self‐consistent, comprehensive theoretical results on plasma transport induced by low‐frequency hydromagnetic waves. Effects such as finite ion Larmor radii, realistic magnetic field geometries, general plasma equilibria, magnetic trapping, and arbitrary wave polarizations are included in the present analysis. Corresponding transport equations for flux tube‐averaged radial fluxes of particle, energy, and parallel momentum as well as local heating and parallel flow generation rates are obtained. The resultant transport coefficients exhibit the appealing physical pictures of exchanges of energies and momenta between resonant plasma particles and hydromagnetic wave quasi‐particles. The present results also indicate that radial transport generally consists of convective components in addition to the usual diffusive ones. Applications to the particle transport at the dayside magnetopause as well as the nonlinear saturation of drift Alfvén‐ballooning mode instabilities [ Chen and Hasegawa , 1991] are also presented.