Original scientific paper

Effects of negative ions on the ion-acoustic solitons and double-layers in a relativistic plasma

Sailendra N. Paul ; Centre for Plasma Studies, Faculty of Science, Jadavpur University, Calcutta - 700032, Ind
Kalyan K. Mondal ; Centre for Plasma Studies, Faculty of Science, Jadavpur University, Calcutta - 700032, Ind
Asesh Roychowdhury ; Centre for Plasma Studies, Faculty of Science, Jadavpur University, Calcutta - 700032, Ind

Abstract

Korteweg–de Vries equation for a relativistic plasma consisting of electrons, positive ions and negative ions has been derived using the reductive perturbation method for the study of ion–acoustic solitary waves. Near the critical density of negative ions for which the nonlinearity of Korteweg–de Vries equation vanishes, the modified Korteweg–de Vries equation has been derived. Formation of double layers is analysed from the mixed form of Korteweg–de Vries and modified Korteweg–de Vries equations. Profiles of ion–acoustic solitons and double layers are shown for the plasmas having (H+, Cl−) ions, (H+, O−) ions, (H+, SF− 5 ) ions and (He+, SF− 5 ) ions.

Keywords

Hrčak ID:

303485

URI

https://hrcak.srce.hr/303485

Publication date:

5.5.1996.

Article data in other languages: croatian

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