Nonlinear instability and saturation of linearly stable current-carrying pair plasmas

A. Luque, Hans Schamel, B. Eliasson, P. K. Shukla

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Abstract

The nonlinear instability of current-carrying pair plasmas is investigated with a Vlasov–Poisson model for the two-particle species. It is shown that linearly stable configurations are unstable against small incoherent perturbations of the particle distribution functions. The instability gives rise to a self-acceleration and growth of phase-space holes. After the growth of the phase-space holes, the instability reaches a chaotic saturation where the finite-amplitude holes interact and merge, and after a long time, the system attains a stable equilibrium state with a smaller drift and a larger temperature than the initial one, and where a few stable phase-space holes are present.
Original languageEnglish
Article number122307
Number of pages6
JournalPhysics of Plasmas
Volume12
Issue number12
DOIs
Publication statusPublished - 20 Dec 2005

Keywords

  • pair plasma
  • current carrying
  • instability

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