Linear theory of the fine emission structure of an Alfven maser with a frequency drift
Abstract
A linear theory based on equations for the moments of the wave energy spectral energy is used to describe the pulsed emission of the magnetospheric Alfven laser with a frequency drift. The nonadiabatic case is considered in which the characteristic process time is comparable with the time of travel of the Alfven waves between the conjugate hemispheres. The theory allows for the effects of cyclotron interaction between waves and particles in the magnetosphere and changes in the coefficient of Alfven wave reflection from the ionosphere due to precipitating particles. The principal mode of the Alfven laser, defined as an antisymmetric energy mode, is described.
- Publication:
-
Radiofizika
- Pub Date:
- April 1990
- Bibcode:
- 1990RaF....33..408B
- Keywords:
-
- Fine Structure;
- Frequency Shift;
- Magnetohydrodynamic Stability;
- Magnetohydrodynamic Waves;
- Magnetospheric Instability;
- Wave Reflection;
- Electromagnetic Interactions;
- Ionospheric Propagation;
- Maser Outputs;
- Particle Precipitation;
- Radiant Flux Density;
- Geophysics