Sheath-induced instabilities in plasmas with E0×B0 drift.
It is shown that ion acoustic waves in plasmas with E0×B0 electron drift become unstable due to the closure of plasma current in the chamber wall. Such unstable modes may enhance both near-wall conductivity and turbulent electron transport in plasma devices with E0×B0 electron drift and unmagnetized ions. It is shown that the instability is sensitive to the wall material: a high value of the dielectric permittivity (such as in metal walls) reduces the mode growth rate by an order of magnitude but does not eliminate the instability completely.
Department of Physics and Engineering Physics, University of Saskatchewan 116 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada.
A I
AI
Smolyakov
W
W
Frias
I D
ID
Kaganovich
Y
Y
Raitses