Original scientific paper
On the existence of ion-acoustic soliton in a weakly relativistic plasma having cold ions and two-temperature electrons
Sankar Chattopadhyay
; Serampore Girls' College, P.O. Serampore, Dist. Hooghly, West Bengal, India; Permanent Address: Daria J. L. N. Vidyalaya, P.O. Thakuraniberia, Via: Taldi, Dist. 24 Parganas (S), West Bengal, India
Kamal Kumar Ghosh
; Department of Mathematics, Netaji Nagar College for Women, Calcutta 700040, India
Sailendra Paul
; Serampore Girls' College, P.O. Serampore, Dist. Hooghly, West Bengal, India
Abstract
Propagation of a finite-amplitude ion-acoustic solitary wave in a weakly-relativistic plasma consisting of cold ions and warm electrons of two different temperatures have been studied analytically. Sufficient and necessary conditions for the existence of ion-acoustic solitons in such a plasma are obtained from which it is observed that both the relativistic effect and the two-temperature electrons have important role for the formation of the soliton. Critical values for the soliton amplitude and its velocity are numerically estimated for different values of the concentration of two-temperature electrons and relativistic stream velocity.
Keywords
ion-acoustic solitary wave; weakly-relativistic plasma; cold ions and warm electrons of two different temperatures; critical values of amplitude and velocity
Hrčak ID:
301061
URI
Publication date:
1.6.2000.
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