Abstract
In this paper, the effects of two-temperature electrons on the slow and fast modulation instability and envelope solitons of ion-acoustic waves have been theoretically studied in a fully relativistic plasma using the method of Fried and Ichikawa. The expression of the nonlinear Schrodinger equation in fully relativistic plasma has been derived and the condition for the existence of slow and fast modulation instability of ion-acoustic wave is obtained. From the nonlinear Schrodinger equation, the solutions for slow and fast envelope solitons in the fully relativistic plasma are also obtained. The profiles of the growth rate of modulation instability and envelope solitons are drawn and discussed taking different values of ion-stream velocity and density and temperature of two-temperature electrons. The results are applicable to the study of ion-acoustic envelope solitons both in weak- and ultra- relativistic plasma.
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Paul, I., Chatterjee, A. & Paul, S.N. Effects of two-temperature electrons on the slow and fast modulation instability and envelope solitons in a fully relativistic plasma. Indian J Phys 97, 4069–4081 (2023). https://doi.org/10.1007/s12648-023-02706-y
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DOI: https://doi.org/10.1007/s12648-023-02706-y