Excitation and Propagation of Whistler Waves in Density Depletion Ducts in a Magnetoplasma

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 5Sprache: EnglischTyp: PDF

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Kudrin, Alexander V.; Bakharev, Pavel V. (Department of Radiophysics, University of Nizhny Novgorod, 23 Gagarin Ave., Nizhny Novgorod, 603950, Russia)
Zaboronkova, Tatyana M. (Department of Applied Physics, Technical University of Nizhny Novgorod, 24 Minin St., Nizhny Novgorod, 603950, Russia)

Excitation and propagation of whistler-mode waves in a laboratory or ionospheric plasma containing a cylindrical magnetic-field-aligned density depletion duct are studied. Using a rigorous solution for the total source-excited field comprising both the discrete and continuous parts of the spatial spectrum of waves, the radiation resistance of a loop antenna located in such a duct is determined. Conditions have been revealed under which the power radiated from the loop antenna immersed in a density depletion duct is dominated by the contribution of either discrete- or continuous-spectrum modes.