Solitary sound pulses via electron-vortex distribution in partially ionized plasmas

Details Solitary sound pulses via electron-vortex distribution in partially ionized plasmas Solitary sound pulses via electron-vortex distribution in partially ionized plasmas

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.219..143s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 219, no. 1, p. 143-147

Computer Science

Sound

1

Collisional Plasmas, Ion Acoustic Waves, Korteweg-Devries Equation, Nonlinearity, Pulses, Solitary Waves, Sound Waves, Boltzmann Distribution, Electron Density (Concentration), Electron Distribution, Trapped Particles, Vortices

Scientific paper

It is shown that nonlinear propagation of sound waves in partially ionized collisional plasmas is governed by a modified Korteweg-de 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 electron-vortex distribution induced solitary sound pulses are more pronounced, it can easily be indentified in partially ionized plasmas.

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