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A theoretical study for parallel electric field in nonlinear magnetosonic waves in three-component plasmas
en
TOIDA Mieko
0000-0003-2691-5068
The electric field parallel to the magnetic field in nonlinear magnetosonic waves in three component plasmas (two-ion-species plasma and electron-positron-ion plasma) is theoretically studied based on a three-fluid model. In a two-ion-species plasma, a magnetosonic mode has twobranches, high-frequency mode and low-frequency mode. The parallel electric field E|| and its integral along the magnetic field, F = - ∫ E|| ds, in the two modes propagating quasiperpendicular to the magnetic field are derived as functions of the wave amplitude and the density ratio andcyclotron frequency ratio of the two ion species. The theory shows that the magnitude of F in the high-frequency-mode pulse is much greater than that in the low-frequency-mode pulse. Theoretical expressions for E|| and F in nonlinear magnetosonic pulses in an electron-positronionplasma are also obtained under the assumption that the wave amplitudes are in the range of (me/mi)1/2 < ∈ < 1, where me / mi is the electron to ion mass ratio.
Physics of Plasmas
23
2016-07-15
AIP Publishing
1070664X
AA10987555
10.1063/1.4958312
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Physics of Plasmas 23, 072115 (2016) and may be found at https://aip.scitation.org/doi/abs/10.1063/1.4958312.
https://doi.org/10.1063/1.4958312|Publisher version