Iv. Kuzora et al., Dynamic polarizability and the theory of the ion-acoustic turbulence in a plasma containing ions of two species, J EXP TH PH, 93(5), 2001, pp. 1035-1051
A damping rate of the induced scattering of fast ion-acoustic waves on ions
, the explicit form of which depends on the plasma polarizability at the fr
equency of beats of the interacting waves, was determined for a nonisotherm
al plasma containing hot electrons and cold ions of two species. In the cas
e of a plasma containing mobile light ions and slow heavy ions, a new pheno
menon of significant decrease in the probability of induced scattering was
established. This effect is related to the fact that a contribution to the
dielectric function of slow ions, determining the scattering amplitude, dep
ends on both spatial and frequency dispersion. It is shown that this decrea
se in the induced scattering probability leads to a growth of the turbulent
noise level and to a change of the anomalous transport coefficients in the
limit of large turbulent Knudsen numbers. The same effect is responsible f
or a relative decrease in the runaway electron production. (C) 2001 MAIK "N
auka/Interperiodica".