Abstract
An approximation is analyzed which has been used in a number of papers devoted to the interaction between an intense electromagnetic wave and an electron gas in the caseλ/Ω ≫ 1. In general form and in specific examples the incorrectness of the approximation under discussion is shown. By using the correct asymptotic formula obtained in this paper, formulas are deduced for the phonon (plasmon) gain coefficient of an electromagnetic wave, in a quantizing magnetic field.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 19–23, May, 1984.
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Shon, N.K., Shmelev, G.M. & Épshtein, É.M. An approximation in the investigation of kinetic effects in the field of a strong electromagnetic wave. Soviet Physics Journal 27, 369–372 (1984). https://doi.org/10.1007/BF00898602
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DOI: https://doi.org/10.1007/BF00898602