Ion and electron beam effects on kinetic Alfvén waves in an inhomogeneous magnetosphere

Details Ion and electron beam effects on kinetic Alfvén waves in an inhomogeneous magnetosphere Ion and electron beam effects on kinetic Alfvén waves in an inhomogeneous magnetosphere

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002p%26ss...50...93d&link_type=abstract

Planetary and Space Science, Volume 50, Issue 1, p. 93-99.

Physics

4

Scientific paper

Kinetic Alfvén waves are examined in the presence of ion and electron beams with bi-Maxwellian distribution functions. The theory of particle aspect analysis is used to evaluate the trajectories of charged particles in the electromagnetic field of a kinetic Alfvén wave. The expressions for the field-aligned currents, perpendicular currents (with respect to B0), dispersion relation and growth-rate with marginal instability criteria are derived. The significance of the investigation for the earth's magnetoplasma is discussed.

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