Reflection of an Ion-Acoustic Soliton in a Finite Ion Temperature Magnetized Plasma

We consider an inhomogeneous finite ion temperature magnetized plasma and derive relevant modified Korteweg- deVries equations for uphill and downhill propagating solitons. Then, we couple these equations and solve for the expressions of amplitudes and widths of the solitons, together with the reflection coefficient (at the point of reflection), under the combined effect of magnetic field B0, wave propagation angle thetas, and ion temperature Ti (or temperature ratio sigma = Ti/Te). With the help of various figures, we analyze the effect of field B0, temperature Ti, angle thetas, plasma density n0, and the density gradient on the propagation and reflection of the solitons. The solitons are found to reflect strongly for the larger values of angle thetas, ion drift velocity v0, and the density gradient. Although the reflected soliton amplitude increases in the plasma that have higher temperature ions, it shows weak dependence on the ion temperature. Moreover, the magnetic field weakens the soliton reflection.

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