Letter to the Editor UHF electromagnetic emission stimulated by HF pumping of the ionosphere
| Autor: | S. M. Grach, V. M. Fridman, L. M. Lifshits, T. S. Podstrigach, E. N. Sergeev, S. D. Snegirev |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
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| Zdroj: | Annales Geophysicae, Vol 20, Pp 1687-1691 (2002) |
| Druh dokumentu: | article |
| ISSN: | 1687-2002 0992-7689 1432-0576 |
| DOI: | 10.5194/angeo-20-1687-2002 |
| Popis: | 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.Key words. Ionosphere (active experiments; wave-particle interactions) – Solar physics, astrophysics, and astronomy (radio emissions) |
| Databáze: | Directory of Open Access Journals |
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