Fully nonlinear ion-acoustic solitary waves in a magnetized plasma

Based on the magnetohydrodynamics (MHD) model, an exact arbitrary-amplitude general solution is presented for oblique propagation of solitary excitations in two-and three-component quasineutral magnetoplasmas, adopting the standard pseudopotential approach. It is revealed that the necessary matching criterion of existence of such oblique nonlinear propagations in two and three-fluid magnetoplasmas share global features. These features are examined for the cases of electron-ion and electron-positron-ion magnetoplasmas with diverse equations of state. This study also reveals that for electron-ion magnetoplasmas with plasma-frequencies larger than the cyclotron-frequency (B 0 < 0.137 √ n 0 ) a critical-angle of β cr = arccos B 0 /(0.137 √ n 0 ) exists, at which propagation of solitary excitation is not possible. Coriolis effect on allowed soliton matching condition in rotating magnetoplasmas is also considered as an extension to this work. Current investigation can have important implications for nonlinear wave dynamics in astrophysical as well as laboratory magnetoplasmas.

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Fully nonlinear ion-acoustic solitary waves in a magnetized plasma

Cited by 4 publications

References 10 publications

On the study of ion-acoustic solitary waves and double-layers in a drift multicomponent plasma with electron-inertia

On the study of ion-acoustic solitary waves and double-layers in a drift multicomponent plasma with electron-inertia

Analytical study on the existence of ion-acoustic solitary waves in a plasma consisting of warm streaming ions and nonthermal electrons

Generalized matching criterion for electrostatic ion solitary propagations in quasineutral magnetized plasmas

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