Computer Science – Sound
Scientific paper
Dec 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970p%26ss...18.1813y&link_type=abstract
Planetary and Space Science, Volume 18, Issue 12, p. 1813-1820.
Computer Science
Sound
Scientific paper
Resonant wave-wave interaction among one ion sound wave and two electro-magnetic waves in an isotropic plasma is studied. The emphasis is on the possibility of trapping the electromagnetic wave. Equations for the three-wave system are derived. One particularly interesting case is that for which the frequency of ion sound wave is much less than the frequency of electromagnetic waves. For this case it is shown that energy exchange takes place only between the two high frequency waves. The ion sound wave does not participate in the energy exchange process but acts as a kind of catalyst for the interaction. Simple solutions are obtained. It is found that the electromagnetic energy is trapped within a certain spatial region. The trapping width is found to depend, among other parameters, on the magnitude of ion sound wave perturbation. Possible application of the theory to topside ionospheric observations of field-aligned propagation is discussed.
Liu Chang-Hong
Yeh K. C.
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