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Wave Effects Related to Altitude Variations in the Ion Composition of the Ionosphere

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Radiophysics and Quantum Electronics Aims and scope

Properties of the waves, which can propagate in a magnetized plasma in the frequency range below the proton gyrofrequency, depend strongly on the ion composition of the plasma. Addition of a new sort of ions leads to the appearance of a new resonance frequency, at which the refractive index becomes infinite, and a new cutoff frequency, at which the refractive index becomes zero. In this case, the topology of frequency dependence of the squared refractive index changes. Specifically, a new oscillation branch appears, which is located above the cutoff frequency. A question arises whether these oscillations are excited if radiation with the corresponding frequency, which propagates in a different mode, is present in the plasma. A linear transformation of the waves is another important effect, which is related to variations in the ion plasma composition. These two issues, which are directly related to the theory of formation of proton whistlers in the ionosphere, where the ion composition varies with altitude, are considered in this work.

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Correspondence to D. R. Shklyar.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 59, No. 7, pp. 575–592, July 2016.

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Vavilov, D.I., Shklyar, D.R. Wave Effects Related to Altitude Variations in the Ion Composition of the Ionosphere. Radiophys Quantum El 59, 519–534 (2016). https://doi.org/10.1007/s11141-016-9720-8

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  • DOI: https://doi.org/10.1007/s11141-016-9720-8

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