Scattering of electromagnetic waves in a magnetized plasma with an HF pump

Abstract

The scattering of transverse electromagnetic waves by turbulent density fluctuations in a magnetized plasma in the presence of external pump fields is investigated. The case where a lower-hybrid pump wave decays into daughter and ion-cyclotron waves in a plasma with ion-temperature anisotropy is considered. The situation where an upper-hybrid pump wave parametrically excites modified convective cells and electron drift waves is also analyzed. The differential scattering cross-sections in the region above the parametric instability thresholds for these three cases are calculated.

Double Langmuir frequency radiation due to transformation processes in turbulent plasma

“…Consequently, we may write μ > μ th = k ⊥ E th c ω 0 B 0 . In formula (5), < δn 2 e > (i) > 0 ω, q , < δ E 2 > 0 ω, q are the standard correlation spectral functions of electron (ion) density and electric field for non-interacting particles in magnetized plasma in the absence of the pump field (Pavlenko 1990;2002).…”

“…The theory of plasma fluctuations in magnetized plasma and the effect of finite amplitude oscillating electric field were discussed by Klimontovich (1982). In Pavlenko (1990), Wilhelmsson (1991) and Pavlenko (2002) on the base of kinetic fluctuations theory, the scattering in nonequilibrium plasma with hybrid pump is studied. Notice must be taken that the fluctuations theory for magnetized plasma with the pump was developed in Pavlenko (1986) and(1992).…”

HF Conductivity of Parametrically Unstable Magnetized Plasma

“…j are the frequencies of the plasma modes in the absence of a pump field. Substituting (18) in (17), and taking into account (19) we obtain a nonlinear equation for # eff . It is shown in Ref.…”

“…We note that in recent years the anomalous transport and scattering processes on the basis of kinetic fluctuation theory in a plasma have been intensively investigated [13][14][15][16][17][18].…”

Transformation of electromagnetic waves in turbulent magnetized plasmas

“…In [11][12][13], on the basis of kinetic fluctuation theory, the processes of wave scattering in a non-equilibrium magnetized plasma in the presence of lower and upper hybrid pumps are investigated. Note that the fluctuation theory for a magnetized plasma in the presence of a pump wave was developed in [14][15][16][17].…”