A theoretical model for the temporal evolution of HF-enhanced plasma lines
Abstract
The HF-enhanced plasma lines (HFPLs) observed in the Arecibo heating experiments refer to the radar returns at frequencies near the sum and difference of the radar frequency and the HF-heatear frequency. Those enhanced spectral lines are caused by backscatter of radar signals from parametrically excited plasma waves having a wavenumber of 18 n. A nonlinear theory was developed to describe the temporal evolution of those specified plasma waves and their originating altitude interval of HFPLs observed at Arecibo, Puerto Rico are explained. The theoretical resultsagree well with the observation (Djuth and Sulzer, 1989).
- Publication:
-
In AGARD
- Pub Date:
- October 1990
- Bibcode:
- 1990imip.agarR....K
- Keywords:
-
- Mathematical Models;
- Nonlinearity;
- Plasma Heating;
- Plasma Waves;
- Plasmas (Physics);
- Stability;
- Backscattering;
- Diffusion;
- Electrons;
- Frequencies;
- Line Spectra;
- Geophysics