Instability of Coherent Ion Acoustic Wave in a Phonon Gas
- 15 July 1976
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 41 (1) , 272-280
- https://doi.org/10.1143/jpsj.41.272
Abstract
The ion-acoustic wave propagation in a field of randomly excited low-frequency waves (phonon gas) is investigated, by obtaining the linear response function of plasmas in a turbulent phonon state. The turbulent phonons have an influence on the propagation of the coherent wave, to lead a decreased phase velocity. The coherent wave becomes unstable due to the resonant coupling with the beat wave of turbulent phonons. As the result of the instability, the coherent wave with long wavelength piles up in a plasma with turbulent phonons. The results qualitatively agree with the recent experiment.Keywords
This publication has 5 references indexed in Scilit:
- Propagation of Test Waves in Plasmas with Ion Acoustic TurbulenceJournal of the Physics Society Japan, 1976
- Finite Amplitude Ion Acoustic Waves in a Plasmon GasJournal of the Physics Society Japan, 1974
- Sum-Rule Analysis of Collective Modes in a Turbulent PlasmaPhysical Review Letters, 1974
- Nonlinear Wave Modulation in Collisionless PlasmasJournal of the Physics Society Japan, 1972
- Propagation of Ion-Acoustic Solitary Waves of Small AmplitudePhysical Review Letters, 1966