Observation of Large-Scale Density Cavities and Parametric-Decay Instabilities in the High-Altitude Discrete Auroral Ionosphere under Pulsed Electromagnetic Radiation
Journal Article
·
· Physical Review Letters
- International Foundation for Science, Health, and the Environment, Panorama City, California (United States)
A large density cavity that measured 2000 km across and 500 km in height was observed by DEMETER and Formosat/COSMIC satellites in temporal and spatial relation to a new mode of propagation of electromagnetic (em) pulses between discrete magnetic field-aligned auroral plasmas to high altitudes. Recorded positive plasma potential from satellite probes is consistent with the expulsion of electrons in the creation of density cavities. High-frequency decay spectra support the concept of parametric instabilities fed by free energy sources.
- OSTI ID:
- 21180287
- Journal Information:
- Physical Review Letters, Vol. 102, Issue 10; Other Information: DOI: 10.1103/PhysRevLett.102.105002; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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