Nongyrotropy as a source of instability and mode coupling

Journal Article · Thu Dec 24 00:00:00 EST 1992 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/92GL01942· OSTI ID:6821458

Brinca, A L; Borda de Agua, L ^[1]; Winske, D ^[2]

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1. Instituto Superior Tecnico, Lisboa (Portugal)
2. Los Alamos National Lab., NM (United States)

Nongyrotropic particle populations can bring about linear mode coupling in homogeneous media among the three eigenmodes of parallel propagation in gyrotropic magnetoplasmas. These interactions stimulate, in general, wave activity that does not occur in corresponding (random gyrophase) gyrotropic ambients. Solutions of the dispersion equation illustrate that simple introduction of gyrophase organization can (1) excite electrostatic (and electromagnetic) perturbations in media whose free energy sources are solely electromagnetic, and (2) drive hybrid (both electrostatic and electromagnetic) wave growth in thoroughly stable Maxwellian plasmas. 12 refs., 4 figs.

• OSTI ID: 6821458
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Vol. 19:24; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH MAGNETOSPHERE
HOMOGENEOUS PLASMA
WAVE PROPAGATION
ANISOTROPY
COUPLING
DISPERSION RELATIONS
DISTRIBUTION
FREE ENERGY
INTERACTIONS
MODE CONTROL
PLASMA INSTABILITY
POPULATIONS
VELOCITY
CONTROL
EARTH ATMOSPHERE
ENERGY
INSTABILITY
PHYSICAL PROPERTIES
PLASMA
THERMODYNAMIC PROPERTIES
661320* - Auroral
Ionospheric
& Magnetospheric Phenomena- (1992-)