Velocity-Space Diffusion in a Perpendicularly Propagating Electrostatic Wave

Details Velocity-Space Diffusion in a Perpendicularly Propagating Electrostatic Wave Velocity-Space Diffusion in a Perpendicularly Propagating Electrostatic Wave

2005-01-07

arxiv.org/abs/physics/0501035v1

Physics

Plasma Physics

Plain TeX, 11 pages, 5 figures. In "Intrinsic Stochasticity in Plasmas", edited by G. Laval and D. Gresillon (Editions de Phys

Scientific paper

The motion of ions in the fields B = B_0 zhat and E = E_0 yhat cos(k_perp y - omega t) is considered. When omega >> Omega_i and v_perp > omega/k_perp, the equations of motion may be reduced to a set of difference equations. These equations exhibit stochastic behavior when E_0 exceeds a threshold. The diffusion coefficient above the threshold is determined. Far above the threshold, ion Landau damping is recovered. Extension of the method to include parallel propagation is outlined.

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