Magnetic field contribution to soliton propagation and reflection in an inhomogeneous plasma |
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Authors: | Hitendra K. Malik |
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Affiliation: | Plasma Waves and Particle Acceleration Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016, India |
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Abstract: | The propagation and reflection characteristics of an ion acoustic soliton are studied in an inhomogeneous plasma through two coupled equations of the KdV family, and the contribution of external static magnetic field is evaluated. The incident and reflected solitons behave oppositely with the angle ψ between the directions of magnetic field and the wave propagation. Two cases of ωpi>Ωi and ωpi<Ωi are examined, where ωpi is the ion plasma frequency and Ωi is the ion gyrofrequency. It is found that the soliton gets reflected more strongly when the condition ωpi>Ωi is achieved in the plasma. The effect of magnetic field is found to be more pronounced on the reflected soliton. |
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