CONCERNING THE ROLE OF NONQUASINEUTRALITY IN PLASMA INSTABILITIES

In nonequilibrium plasma with the density gradient across a homogeneou s axial magnetic field the nonquasineutrality in perturbations is the factor destabilizing the plasma at excitation of both short and long w aves of drift-dissipative instability. At the excitation of long drift waves the nonquasineutrality in perturbations can also destabilize pl asma when combined with ion inertia. In strong magnetic fields the rol e of nonquasineutrality in perturbations turns out to be essential eve n at high densities of charged particles.