Transition of ion-acoustic perturbations in multicomponent plasma with negative ions
- Plasma Physics Laboratory, Materials Science Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Guwahati-35 (India)
Evolution of ion-acoustic compressive (positive) and rarefactive (negative) perturbations in a multicomponent plasma with negative ions has been investigated in a double plasma device. Transition of compressive solitons in electron-positive ion plasma, into a dispersing train of oscillations in a multicomponent plasma, when the negative ion concentration r exceeds a critical value r{sub c}, has been observed. On the other hand, an initial rarefactive perturbation initially evolves into a dispersing train of oscillations in electron-positive ion plasma and transforms into rarefactive solitons in a multicomponent plasma when the negative ion concentration is higher than the critical value. The Mach velocity and width of the compressive and rarefactive solitons are measured. The compressive solitons in the range 0<r<r{sub c} and the rarefactive solitons in the range r>r{sub c} have different characteristics than the Korteweg-de Vries (KdV) solitons at r=0 and modified KdV solitons at r=r{sub c}. A nonlinear differential equation having two terms to account for the lower and higher order nonlinearity has been used to explain the observed results.
- OSTI ID:
- 21120492
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of ion beam on the propagation of rarefactive solitons in multicomponent plasma with negative ions
Studies on soliton energy at critical and noncritical densities of negative ions in an inhomogeneous magnetized warm plasma
Modified Korteweg--deVries solitons in a warm plasma with negative ions
Journal Article
·
Tue Jun 15 00:00:00 EDT 2010
· Physics of Plasmas
·
OSTI ID:21378012
Studies on soliton energy at critical and noncritical densities of negative ions in an inhomogeneous magnetized warm plasma
Journal Article
·
Wed Nov 14 23:00:00 EST 2007
· Physics of Plasmas
·
OSTI ID:21069875
Modified Korteweg--deVries solitons in a warm plasma with negative ions
Journal Article
·
Wed Feb 28 23:00:00 EST 1990
· Physics of Fluids B; (USA)
·
OSTI ID:7166013