Effects of density gradient and dust concentration on ion acoustic solitons in multicomponent plasmas

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3271162· OSTI ID:21371274

Shah, Asif; Haque, Q; Mahmood, S ^[1]

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1. Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 45320 (Pakistan)

The ion acoustic solitons have been investigated in an inhomogeneous two-temperature electron plasma in the presence of immobile dust particles. The modified Korteweg-de Vries equation with an additional term due to density gradients is deduced by employing reductive perturbation technique. It is noticed that the amplitude of the soliton is increased with the decrease in the positively charged dust concentration, while the soliton amplitude is increased with the increase in negatively charged dust concentration in such inhomogeneous plasmas. The equilibrium density profile is taken exponential type and density gradient effects on soliton formation are also studied. The numerical results are shown for illustration.

• OSTI ID: 21371274
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DIFFERENTIAL EQUATIONS
DUSTS
EQUATIONS
EQUILIBRIUM
INHOMOGENEOUS PLASMA
ION ACOUSTIC WAVES
ION WAVES
KORTEWEG-DE VRIES EQUATION
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA DENSITY
PLASMA WAVES
QUASI PARTICLES
SOLITONS