Oblique modulation of ion-acoustic waves and envelope solitons in electron-positron-ion plasma
- Department of Physics, Theoretical Plasma Physics Group, Quaid-i-Azam University, Islamabad 45320 (Pakistan)
- Pakistan Atomic Energy Commission, P.O. Box 1114, Islamabad 44000 (Pakistan)
The effect of oblique modulation on the amplitude dynamics of ion-acoustic wave propagating in a collisionless electron-positron-ion plasma is investigated. Using Krylov-Bogoliubov-Mitropolsky (KBM) perturbation method, a nonlinear Schroedinger (NLS) equation is derived which governs the evolution of obliquely modulated ion-acoustic envelope excitations. It is found that the presence of positron component significantly modifies the stability domains for small angles of propagation with the direction of modulation. The stationary solutions of NLS equation, i.e., bright and dark envelope solitons, become narrower as the concentration of positron component increases.
- OSTI ID:
- 21277220
- Journal Information:
- Physics of Plasmas, Vol. 16, Issue 6; Other Information: DOI: 10.1063/1.3142473; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Modulational instability of ion acoustic wave with warm ions in electron-positron-ion plasmas
Perpendicular propagating electromagnetic envelope solitons in electron-positron-ion plasma
Modulation instability of low-frequency electrostatic ion waves in magnetized electron-positron-ion plasma
Journal Article
·
Sun May 15 00:00:00 EDT 2011
· Physics of Plasmas
·
OSTI ID:21277220
Perpendicular propagating electromagnetic envelope solitons in electron-positron-ion plasma
Journal Article
·
Sat May 15 00:00:00 EDT 2010
· Physics of Plasmas
·
OSTI ID:21277220
Modulation instability of low-frequency electrostatic ion waves in magnetized electron-positron-ion plasma
Journal Article
·
Mon Sep 15 00:00:00 EDT 2008
· Physics of Plasmas
·
OSTI ID:21277220
+1 more