Solitary Sound Pulses via ElectronVortex Distribution in Partially Ionized Plasmas
Abstract
It is shown that nonlinear propagation of sound waves in partially ionized collisional plasmas is governed by a modified Kortewegde Vries (mKdV) equation when the electron distribution function deviates from the Boltzmann distribution. The mKdV equation admits a sharply localized solitary sound pulse, the profile and width of which are different from that which involves the Boltzmann electron number density response. Since the electronvortex distribution induced solitary sound pulses are more pronounced, it can easily be identified in partially ionized plasmas.
 Publication:

Astrophysics and Space Science
 Pub Date:
 September 1994
 DOI:
 10.1007/BF00657865
 Bibcode:
 1994Ap&SS.219..143S
 Keywords:

 Collisional Plasmas;
 Ion Acoustic Waves;
 KortewegDevries Equation;
 Nonlinearity;
 Pulses;
 Solitary Waves;
 Sound Waves;
 Boltzmann Distribution;
 Electron Density (Concentration);
 Electron Distribution;
 Trapped Particles;
 Vortices;
 Astrophysics