[Table of Contents]

Plasma and Fusion Research

Volume 8, 2401018 (2013)

Regular Articles

Theory for Finite Temperature Effects on Magnetosonic Waves in a Two-Ion-Species Plasma
Yukio AOTA and Mieko TOIDA
Department of Physics, Nagoya University, Nagoya 464-8602, Japan
(Received 19 November 2012 / Accepted 14 February 2013 / Published 27 March 2013)

Abstract

The theory of magnetosonic waves perpendicular to a magnetic field in a two-ion-species plasma is extended to include finite temperature effects based on the three-fluid model with finite ion and electron pressures. First, the condition for the dispersion relation of the low-frequency mode, the lower branch of magnetosonic waves, to be approximated as a form of weak dispersion is presented. Next, by virtue of this, it is shown that the KdV equation for the low-frequency mode is valid for amplitude ε < εmax, where the upper limit of the amplitude εmax is given as a function of the ratio of the kinetic to magnetic energies, the density ratio, and the cyclotron frequency ratio of two ion species. The finite-temperature effects on linear and nonlinear high-frequency modes and on heavy-ion acceleration by the high-frequency-mode pulse are also discussed.

Keywords

magnetosonic wave, nonlinear wave, soliton, KdV equation, multi-ion-species plasma

DOI: 10.1585/pfr.8.2401018

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This paper may be cited as follows:

Yukio AOTA and Mieko TOIDA, Plasma Fusion Res. 8, 2401018 (2013).