Ion temperature gradient instability in a dusty plasma.
An analysis of the temperature-gradient-driven ( eta(i) ) instability of drift waves in dusty plasma is presented. Various limits that allow for the coupling of the drift wave with the dynamics of dust grains are discussed. In particular, the cases of tiny (magnetized) and relatively heavy (unmagnetized) grains are studied. It is shown that in both limits the behavior of the eta(i) mode is considerably affected by the dust dynamics. The growth rate turns out to be higher in the presence of dust, and the instability threshold is lower, resulting in a more unstable plasma.
Vranjes
J
J
Centre for Plasma Astrophysics, Celestijnenlaan 200B, 3001 Leuven, Belgium.
Saleem
H
H
Poedts
S
S