Waveguide regime of cyclotron maser instability in plasma regions of depressed density

Journal Article · Mon Jan 15 04:00:00 EST 2007 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X07010047· OSTI ID:21100216

Burinskaya, T M ^[1]; Rauch, J L ^[2]

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1. Russian Academy of Sciences, Space Research Institute (Russian Federation)
2. National Center of Scientific Research, Laboratory of Physics and Chemistry of the Environment (France)

The generation of auroral kilometric radiation from the Earth is studied in a waveguide model that describes the development of cyclotron maser instability in plasma regions of depressed density that have a finite length in one of the directions perpendicular to the magnetic field. A general dispersion relation for waves propagating in an arbitrary direction is derived. Numerical solutions to the dispersion relation show that the instability growth rate increases with wave vector component directed along a tangent to the source boundary in a plane perpendicular to the magnetic field. Waveguide eigenmodes are constructed, and it is shown that, in the general case, the electromagnetic field in the source has an asymmetric structure, the ratio of the electric field components in the source depends on the coordinates, and the electric field component transverse to the source boundary can substantially exceed the component parallel to the boundary. The results obtained are discussed from the standpoint of comparing them with satellite observational data.

• OSTI ID: 21100216
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 1 Vol. 33; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CYCLOTRONS
DISPERSION RELATIONS
ELECTRIC FIELDS
ELECTROMAGNETIC FIELDS
INSTABILITY
INSTABILITY GROWTH RATES
MAGNETIC FIELDS
MASERS
NUMERICAL SOLUTION
PLASMA
PLASMA DENSITY
SATELLITES
WAVEGUIDES