The Influence of Suprathermal Electrons on the Excitation of Short-Wavelength Oscillations in the Ionosphere in the Field of a Powerful Radio Wave

This paper is the continuation of [1]. The expressions obtained in [1] are used to study the influence of suprathermal electrons on the transfer of energy of the upper-hybrid plasma waves excited by the powerful radio emission into the additional region of very short-wavelength oscillations with anomalous dispersion. Using the model examples, we show that this effect can considerably intensify the transfer of plasma-wave energy. According to our calculations, plasma waves in the additional region are excited in fairly broad frequency ranges of a powerful radio wave slightly below the 4th, 5th, and 6th electron gyroharmonics. We discuss the application of the obtained results to the attenuation of the stimulated electromagnetic emission and the auxiliary ionization of the ionosphere by accelerated electrons, which were detected for the pump-wave frequency ranges specified above.