Ultra slow electron holes in collisionless plasmas: Stability at high ion temperature

  title={Ultra slow electron holes in collisionless plasmas: Stability at high ion temperature},
  author={Debraj Mandal and Devendra Sharma and Hans Schamel},
  journal={Physics of Plasmas},
Numerical simulations recover ultraslow solitary electron holes (SEH) of electron-acoustic genre propagating stably well below the ion acoustic speed Cs, where no pure electron perturbation is known to exist yet, as they are disallowed by the ion response. Recovered at high ion temperature (Ti > Te), the reason for this stability (unaccelerated propagation, unseen before in existing literature) of SEH is traced to the loss of neutralizing cold ion response. In the opposite case of a background… 

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