Dust-induced instability in a rotating plasma

作者：Mikhailovskii A B^*; Vladimirov S V; Lominadze J G; Tsypin V S; Churikov A P; Erokhin N N; Galvao R M O

来源：Physics of Plasmas, 2008, 15(1): 014504.

DOI：10.1063/1.2813188

The effect of immobile dust on stability of a magnetized rotating plasma is analyzed. In the presence of dust, a term containing an electric field appears in the one-fluid equation of plasma motion. This electric field leads to an instability of the magnetized rotating plasma called the dust-induced rotational instability (DRI). The DRI is related to the charge imbalance between plasma ions and electrons introduced by the presence of charged dust. In contrast to the well-known magnetorotational instability requiring the decreasing radial profile of the plasma rotation frequency, the DRI can appear for an increasing rotation frequency profile.

• 出版日期2008-1