Wave-particle transport from density drift instabilities - A comparison of local and nonlocal theories

Statistics – Computation

Scientific paper

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Electrostatic Waves, Ionospheric Disturbances, Magnetohydrodynamic Stability, Plasma Density, Plasma Drift, Plasma-Particle Interactions, Collisionless Plasmas, Dissipation, Fourier Series, Magnetic Fields, Plasma Turbulence, Vlasov Equations

Scientific paper

Second-order Vlasov theory is used to compute the dissipation rates of plasma irregularities with a variety of shapes. A derivation of the nonlocal dispersion equation using linearized Vlasov theory is presented. Expressions for the normalized amplitudes of the first-order plasma density and electrostatic potential fluctuations are derived. Expressions are given for the saturation amplitudes of the electrostatic eigenmodes. The wave-particle transport and irregularity dissipation rate are computed by using formulas whose derivation is presented. Computational results for specific density variations are shown, and conclusions on the validity of the local theory as opposed to the nonlocal theory are given.

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