Parametric wave interaction in a plasma with random large-scale inhomogeneities

Journal Article · Thu May 01 04:00:00 EDT 1980 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:6712377

Abramovich, B S; Tamoikin, V V

The parametric decay and coalescence of three waves are analyzed in a weakly turbulent plasma with random inhomogeneities which are large in comparison with the wavelengths. Closed equations are derived for the behavior of all the intensity moments of the parametrically coupled waves under conditions such that the diffusion approximation is applicable. When the characteristic length for multiple scattering is much shorter than the nonlinear-interaction length, the effective growth rate of the average intensity and its moments in the decay processes is smaller than in a uniform plasma. For coalescence processes, this growth rate (or damping rate) determines the distance over which all the intensity moments reach saturation.

• Research Organization: Scientific-Research Radiophysical Institute, Gor'kii
• OSTI ID: 6712377
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 6:3; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
DECAY INSTABILITY
INHOMOGENEOUS PLASMA
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PARAMETRIC INSTABILITIES
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
SPACE CHARGE
TURBULENCE
TWO-STREAM INSTABILITY