Ion cyclotron waves in space plasmas.

Details Ion cyclotron waves in space plasmas. Ion cyclotron waves in space plasmas.

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996brjph..26..426g&link_type=abstract

Braz. J. Phys., Vol. 26, No. 2, p. 426 - 451

Physics

Plasma Waves: Earth Magnetosphere, Plasma Waves: Solar Wind

Scientific paper

The author studies the linear and nonlinear properties of electromagnetic ion-cyclotron waves in the magnetosphere and the solar wind. In particular, he studies parametric decays of large amplitude electromagnetic ion-cyclotron waves (EICW) due to a minor O+ and He+ ion components in the magnetosphere. The nonlinear dispersion relation for the mode coupling in a characteristic magnetospheric scenario is then derived and the parametric decays of the EICW are analyzed. The linear stability of the circularly polarized waves in a solar wind type plasma is then discussed and the dispersion relation of Hollweg et al. (1993) is briefly reviewed. The authors study the nonlinear stability of the alpha particle branch of the dispersion relation, and the nonlinear stability of the proton branch for frequencies of the pump wave close to the proton resonance. Finally, return to the alpha branch to illustrate a number of cases of interest.

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