Nonlinear theory of the E x B instability with an inhomogeneous electric field

Details Nonlinear theory of the E x B instability with an inhomogeneous electric field Nonlinear theory of the E x B instability with an inhomogeneous electric field

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.3913k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, June 1, 1984, p. 3913-3920. Research supported by the U.S. Defense Nu

Physics

10

Electric Fields, Ionospheric Disturbances, Plasma Density, Space Plasmas, Density Distribution, Inhomogeneity, Magnetohydrodynamic Stability, Nonlinear Equations, Power Spectra

Scientific paper

The nonlinear evolution of the E x B instability is studied with an inhomogeneous electric field. The general equations and a nonlinear analytical theory of the instability are given, and the instability is numerically studied. It is concluded that the basic morphology and power spectra of the instability in the nonlinear regime are similar to the homogeneous case. Quasi-linear mechanisms, in which the initial density gradient driving the inhomogeneous instability is modified by a finite-amplitude wave spectrum, can contribute to nonlinear stabilization.

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