Quadratic Susceptibility of Strongly Inhomogeneous Magnetoactive Plasma

Plasma Physics Reports - The expression is obtained for the high-frequency quadratic susceptibility of the strongly inhomogeneous magnetoactive plasma, which describes the nonlinear coupling...     

Efficiency of Nonlinear Interaction of an Ordinary Wave with Longitudinal Oscillations in Strongly Inhomogeneous Magnetoactive Plasma

Plasma Physics Reports - In this paper, we obtain an expression for the high-frequency quadratic susceptibility of strongly inhomogeneous magnetoactive plasma, which describes the nonlinear...     

Low-threshold parametric excitation of the upper hybrid wave in experiments on electron-cyclotron resonance heating by an ordinary wave

The possibility of the low-threshold decay of an ordinary wave into an upper hybrid wave localized in a plasma column (or in an axisymmetric plasma filament) and a low-frequency wave is analyzed. It is shown that the threshold for such a decay, accompanied by the excitation of an ion-acoustic wave, can easily be overcome for plasma parameters typical of model experiments on the Granit linear plasma facility.     

Parametric decay instability of an inhomogeneous plasma in a frequency-modulated pump wave

It is found experimentally that the broadening of the pump-wave spectrum affects the parametric instability in an inhomogeneous plasma more weakly than is predicted by theory. The suppression of the absolute instability is only observed for a pump-wave spectrum width of 2πΔf>100γ, which is much greater than the instability growth rate γ.     

Cathode fall parameters of a self-sustained normal glow discharge in atmospheric-pressure helium

Results from comprehensive studies of a high-current self-sustained glow discharge in atmospheric-pressure helium are presented. The main parameters of the cathode fall, namely, the electric field pro-file, cathode fall thickness, current density, gas temperature, and heat flux to the cathode are determined. The results obtained are discussed using one-dimensional models of the cathode fall with allowance for volumetric heat release.