Nonlinear Waves along a Magnetic Field in a Multi-Ion-Species Plasma.
スポンサーリンク
概要
- 論文の詳細を見る
Propagation of low frequency waves along a uniform external magnetic field in a cold plasma with multiple ion species is studied theoretically and numerically. First, linear dispersion relations are calculated, and nonlinear evolution equations are derived. The right circularly polarized wave does not suffer significant change by the presence of multiple ion species. However, the left circularly polarized wave greatly changes its properties. The Alfvén and ion cyclotron waves are split into two modes in a two-ion-species plasma. These waves are unstable against modulational instability except for a small frequency domain; the growth rates are especially large near the ion cyclotron frequencies. Then, the development of the instability is further investigated with simulations based on a three-fluid model. The growth rates measured in the simulations are in good agreement with the theoretical prediction. Also, it is shown that the growth rates can be greater than cyclotron damping rates for some astrophysical plasmas.
- THE PHYSICAL SOCIETY OF JAPANの論文
THE PHYSICAL SOCIETY OF JAPAN | 論文
- Ladder lattice model of soft optical phonon
- Quantum Spin-Hall Effect in a Quantum Wire
- Spin Current Generated from A Quantum Dot Driven by Pulsed Magnetic Resonance: Real-Time Spin Dynamics
- Spin-Current-Driven Spin Pumping in Rashba Spin-Orbit Coupled Systems : A Spin Torque Effect
- Analysis of XY model with mexican-hat interaction on a circle : Derivation of saddle point equations and study of bifurcation structure