Electrodynamic properties of inhomogeneous magnetoactive plasma: low-frequency limit

Nonlinear electrodynamic properties of inhomogeneous magnetoactive plasmas are considered in the low-frequency limit. The self-consistent field approximation is used to derive the nonlinear relation between the polarization and the electric field strength of the plasma. In the case of a weak inhomogeneity of the plasma, the explicit expressions are derived for the linear susceptibility and the nonlinear susceptibilities for quasi- flute plasma motions taking into account thermal corrections. The nonlinear interaction of low-frequency oscillations in the inhomogeneous magnetized plasma results in a double cascade of waves in the wave vector space. Nonlinear plasma motion in crossed magnetic and gravitational fields is investigated. The phenomenon of a double-interchange-wave cascade is shown and the weak-interchange-turbulence spectra is determined. The nonlinear interaction of the magnetic electron waves accompanying the nonlinear electron waves is considered for large-scale magnetic fields in a plasma. (S.A.V.)