Letter to the Editor
UHF electromagnetic emission stimulated by HF pumping of the ionosphere
Résumé
UHF electromagnetic emission (with a frequency near 600 MHz) from the F-region of the ionosphere pumped by an HF powerful radio wave is revealed. Possible mechanisms of the emission excitation, such as plasma mode con-version, scattering or Earth thermal noise emission off the plasma density irregularities, bremsstrahlung and excitation of high Rydberg states of the neutral particles by the accelerated electrons are discussed.
Origine : Accord explicite pour ce dépôt
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