Ion-acoustic dressed solitons in a dusty plasma

Journal Article · Thu Jun 15 04:00:00 EDT 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2216936· OSTI ID:20787348

Tiwari, R S; Mishra, M K ^[1]

---

1. Department of Physics, University of Rajasthan, Jaipur-302004 (India)

Using the reductive perturbation method, equations for ion-acoustic waves governing the evolution of first- and second-order potentials in a dusty plasma including the dynamics of charged dust grains have been derived. The renormalization procedure of Kodama and Taniuti is used to obtain a steady state nonsecular solution of these equations. The variation of velocity and width of the Korteweg-de Vries (KdV) as well as dressed solitons with amplitude have been studied for different concentrations and charge multiplicity of dust grains. The higher-order perturbation corrections to the KdV soliton description significantly affect the characteristics of the solitons in dusty plasma. It is found that in the presence of positively charged dust grains the system supports only compressive solitons. However, the plasma with negatively charged dust grains can support compressive solitons only up to a certain concentration of dust. Above this critical concentration of negative charge, the dusty plasma can support rarefactive solitons. An expression for the critical concentration of negatively charged dust in terms of charge and mass ratio of dust grains with plasma ions is also derived.

• OSTI ID: 20787348
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 13; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
CORRECTIONS
DISTURBANCES
DUSTS
ION ACOUSTIC WAVES
IONS
KORTEWEG-DE VRIES EQUATION
MASS
MATHEMATICAL SOLUTIONS
MULTIPLICITY
PERTURBATION THEORY
PLASMA
POTENTIALS
RENORMALIZATION
SOLITONS
STEADY-STATE CONDITIONS
VARIATIONS
VELOCITY