Suppression of Electron Thermal Conduction by Whistler Turbulence in a Sustained Thermal Gradient.

  title={Suppression of Electron Thermal Conduction by Whistler Turbulence in a Sustained Thermal Gradient.},
  author={G.T. Roberg-Clark and James F. Drake and Christopher S. Reynolds and Marc Swisdak},
  journal={Physical review letters},
  volume={120 3},
The dynamics of weakly magnetized collisionless plasmas in the presence of an imposed temperature gradient along an ambient magnetic field is explored with particle-in-cell simulations and modeling. Two thermal reservoirs at different temperatures drive an electron heat flux that destabilizes off-angle whistler-type modes. The whistlers grow to large amplitude, δB/B_{0}≃1, and resonantly scatter the electrons, significantly reducing the heat flux. Surprisingly, the resulting steady-state heat… Expand
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