Ion acoustic solitary wave in electron-positron-ion plasma: effect of Landau damping

Details Ion acoustic solitary wave in electron-positron-ion plasma: effect of Landau damping Ion acoustic solitary wave in electron-positron-ion plasma: effect of Landau damping

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.331..163g&link_type=abstract

Astrophysics and Space Science, Volume 331, Issue 1, pp.163-168

Astronomy and Astrophysics

Astrophysics

3

Electron-Positron-Ion Plasma, Ion Acoustic Solitary Wave, Landau Damping

Scientific paper

A Korteweg-de Vries (KdV) equation with a linear Landau damping term describing weakly nonlinear and weakly dispersive ion-acoustic waves in an electron-positron-ion plasma is derived. It is found that the Landau damping causes the solitary wave amplitude to decay with time. It is also found that in absence of Landau damping, both linear wave phase velocity and solitary wave amplitude decrease with the increase of positron density, whereas, both increase with the increase of positron temperature. On the other hand, the Landau damping rate decreases with the increase of both positron density and temperature.

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