Charged-particle diffusion in plasma with negative diffusion coefficient and plasma self-constriction
Bulgarian Academy of Sciences, Institute of Solid State Physics,
Zar Assen 33A, 1000 Sofia, Bulgaria
Accepted: 4 November 1996
We describe a charged-particle diffusion in unbounded plasma, which is controlled by the temperature gradients of the charged particles. The obtained diffusion coefficient can be negative if the temperature of the electrons is greater than the temperature of the ions. We show that this charged-particle diffusion can cause plasma self-constriction, presented by a bell soliton.
PACS: 52.25.Fi – Transport properties / 52.35.-g – Waves, oscillations, and instabilities in plasma
© EDP Sciences, 1996