Dust–ion–acoustic soliton in an inhomogeneous collisional plasma
- 1 April 2004
- journal article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 11 (4) , 1366-1371
- https://doi.org/10.1063/1.1650355
Abstract
In inhomogeneous dusty plasmas, the ion–dust collisions are nonuniform because of the dependence of the collision rates on plasma densities and the grain charge. The propagation of dust–ion–acoustic solitons in such dusty plasmas is studied using the reductive perturbation method. It is shown that either compressive or rarefactive solitons can exist depending on whether the ion-to-electron density ratio is greater or less than a critical value. The interplay between the effects of the plasma inhomogeneity and the spatially varying collision rates can result in the amplitude distribution from decrease to increase when the soliton propagates from high to low density regions. Different from the homogeneous case, the velocity and width of the soliton increase with distance instead of following the changes of the amplitude.Keywords
This publication has 21 references indexed in Scilit:
- Small amplitude solitons in a magnetized dusty plasma with two-ion speciesPhysics of Plasmas, 1998
- Linear and nonlinear dust-acoustic waves in inhomogeneous dusty plasmasPhysics of Plasmas, 1998
- Dynamical aspects of various solitary waves and double layers in dusty plasmasPhysics of Plasmas, 1998
- Dust-acoustic soliton in a dusty plasmaPhysics of Plasmas, 1997
- Solitary potentials in dusty plasmasPhysics of Plasmas, 1996
- Large amplitude ion-acoustic solitons in a dusty plasmaPlanetary and Space Science, 1992
- Dust ion-acoustic wavePhysica Scripta, 1992
- Dusty plasmasPhysica Scripta, 1992
- Nonlinear dust-acoustic waves in multispecies dusty plasmasPlanetary and Space Science, 1992
- Dust-acoustic waves in dusty plasmasPlanetary and Space Science, 1990