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Full-scale simulati...
Full-scale simulation study of stimulated electromagnetic emissions: The first ten milliseconds
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- Eliasson, Bengt (författare)
- Umeå universitet,Institutionen för fysik,Ruhr University Bochum
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- Stenflo, Lennart (författare)
- Umeå universitet,Linköpings universitet,Teoretisk Fysik,Tekniska högskolan,Institutionen för fysik
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(creator_code:org_t)
- Cambridge University Press, 2010
- 2010
- Engelska.
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Ingår i: JOURNAL OF PLASMA PHYSICS. - : Cambridge University Press. - 0022-3778 .- 1469-7807. ; 76, s. 369-375
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Abstract
Ämnesord
Stäng
- A full-scale numerical study is performed of the nonlinear interaction between a large-amplitude electromagnetic wave and the Earths ionosphere; and of the stimulated electromagnetic emission emerging from the turbulent layer, during the first 10 milliseconds after switch-on of the radio transmitter. The frequency spectra are downshifted in frequency and appear to emerge from a region somewhat below the cutoff of the O mode, which is characterized by Langmuir wave turbulence and localized Langmuir envelopes trapped in ion density cavities. The spectral features of escaping O-mode waves are very similar to those observed in experiments. The frequency components of Z-mode waves, trapped in the region between the O- and Z-mode cutoffs show strongly asymmetric and downshifted spectra.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
- fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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