The nonlinear interaction of a longitudinal wave with a finite density beam of trapped electrons is considered. After a Langmuir wave, excited by external sources, transforms into a hybrid of two waves, further increase in the amplitude of the wave is accompanied by twisting of its fragments with positive and negative polarity. The wave is transformed into a train of solitons with positive and negative polarity, which follow one after the other in alternating fashion. The trapped electrons bunch together within intervals occupied by solitons with negative polarity.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 83–91, March, 2014.
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Matveev, A.I. Solitons in a Plasma Wave with a Finite Density Beam of Trapped Electrons. Russ Phys J 57, 376–386 (2014). https://doi.org/10.1007/s11182-014-0250-6
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DOI: https://doi.org/10.1007/s11182-014-0250-6