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Ultrafast Electron Holes in Plasma Phase Space Dynamics
Electron holes (EH) are localized modes in plasma kinetic theory which appear
as vortices in phase space. Earlier research on EH is based on the Schamel
distribution function (df). A novel distribution function is proposed here,
generalizing the original Schamel df in a recursive manner. Nonlinear solutions
obtained by kinetic simulations are presented, with velocities twice the
electron thermal speed. Using 1D-1V kinetic simulations, their propagation
characteristics are traced and their stability is established by studying their
long-time evolution and their behavior through mutual collisions.Comment: 5 pages, 6 figures, accepted in Scientific Report
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