We analyze the nonlinear resonant interaction of energetic electrons with auroral kilometric radiation (AKR). The evolution of the electron distribution function in the energy range 1–150 keV is considered based on the numerical solution of the particle motion equations in a given field of a quasi-monochromatic AKR wave packet. It is shown that for realistic values of the wave amplitude 0.2–0.4 V/m, as a result of the interaction, the loss cone is filled with particles having the energies W <30 keV and the particles are redistributed over pitch angles, which leads to the formation of a butterfly pitch-angle distribution. An energy redistribution of particles, in which the particles with energies 3–30 keV are effectively accelerated to energies 30–100 keV, is also possible, depending on the wave parameters.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 63, Nos. 11, pp. 919–941, November 2020. Russian DOI: 10.52452/00213462 2020 63 11 919
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Grach, V.S., Demekhov, A. Evolution of the Electron Velocity Distribution Function under Resonant Interaction with a Model Wave Packet of Auroral Kilometric Radiation. Radiophys Quantum El 63, 827–847 (2021). https://doi.org/10.1007/s11141-021-10098-4
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DOI: https://doi.org/10.1007/s11141-021-10098-4