Arbitrary amplitude inertial Alfven waves in homogeneous magnetized electron-positron-ion plasmas

Details Arbitrary amplitude inertial Alfven waves in homogeneous magnetized electron-positron-ion plasmas Arbitrary amplitude inertial Alfven waves in homogeneous magnetized electron-positron-ion plasmas

2004-09-03

arxiv.org/abs/physics/0409026v1

Physics

Plasma Physics

12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)

Scientific paper

Nonlinear set of equations for inertial or slow shear Alfven wave (SSAW) in ideal electron-positron-ion (e-p-i) plasmas are presented. The analytical solution for arbitrary amplitude SSAW in such multi-component plasmas is obtained using Sagdeev potential approach. The numerical solutions for several different cases have also been presented for illustrative purpose. It is found that the electron density dips of SSAW are formed in the super Alfvenic region. The amplitude and the width of the nonlinear shear Alfven wave reduces with the increase in the concentration of positrons in electron-ion (e-i) plasmas. The width of the soliton also depends upon the direction of propagation of the perturbation in both e-i and e-p-i plasmas.

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