Formation of fine-scale structure and resonant absorption of electromagnetic waves in a magnetized plasma

Journal Article · Tue Mar 01 04:00:00 EST 1977 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:7090049

Eidman, V Y

The formation of fine-scale structure near the region of a plasma resonance under the influence of an electromagnetic field penetrating into a plasma is analyzed. The electron density is assumed to be a function only of the square amplitude of the electric field, vertical-barEvertical-bar/sup 2/. A study is also made of conditions such that the field in the plasma has a configuration similar to that of an ordinary wave. In the linear approximation (vertical-barEvertical-bar/sup 2/very-much-less-thanE/sup 2//sub cr/, E/sup 2//sub cr/proportional..nu../sub ef//..omega.., where ..nu../sub ef/ is the effective electron collision rate) there is no interaction with the extraordinary wave, for which there is also a resonance in this case. Under the assumption that the external magnetic field is relatively weak (u=..omega../sup 2//sub H//..omega../sup 2/very-much-less-than1, where ..omega../sub H/ is the electron gyrofrequency, and ..omega.. is the angular frequency of the electromagnetic field) it is shown that the fine-scale structure forms if vertical-barEvertical-bar/sup 2/>>E/sup 2//sub cr/. The resulting dissipation of electromagnetic energy is of a universal nature, independent of both ..nu../sub ef//..omega.. and the particular nature of the nonlinearity.

• Research Organization: Scientific-Research Radiophysical Institute, Gor'kii
• OSTI ID: 7090049
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 3:2; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
CONVERSION
ELECTROMAGNETIC FIELDS
ELECTRON DENSITY
HEATING
HYBRID RESONANCE
INHOMOGENEOUS PLASMA
PLASMA
PLASMA DENSITY
PLASMA HEATING
RESONANCE
WAVE PROPAGATION