Original scientific paper
Effects of ionic temperatures on phase velocities of ion-acoustic solitary waves in a drift negative-ion plasma with single temperature electron
S. Chattopadhyay
; Centre for Theoretical Plasma Research, 346, R. K. Pally (Balaka), Sonarpur, Kolkata-700150, India; Department of Mathematics, Daria J. L. N Vidyalaya, West Bengal, India
Abstract
Propagation of ion-acoustic solitary waves in a collisionless, unmagnetised single-electron-temperature plasma containing warm positive and negative ion drifts of equal temperatures is studied. It is found that, if the ions have finite temperatures, then there exist two modes, namely the slow and the fast ion-acoustic mode. The effect of ionic temperatures and negative ions on phase velocities (the fast and slow ion-acoustic modes) of the solitary waves are discussed for the plasmas having (He+, O-),(He+, Cl-) and (H+, O-) ions.
Keywords
ion-acoustic solitary waves; drift motion; phase velocity; slow and fast modes
Hrčak ID:
302227
URI
Publication date:
1.3.2007.
Visits: 180 *