Arbitrary Amplitude Dust-acoustic Solitary Structures in a Three-component Dusty Plasma
Author: Mamun, A.A.
Source: Astrophysics and Space Science, Volume 268, Number 4, 1999 , pp. 443-454(12)
Abstract:A rigorous theoretical investigation has been made of arbitrary amplitude dust-acoustic solitary structures in an unmagnetized three-component dusty plasma whose constituents are an inertial charged dust fluid and Boltzmann distributed ions and electrons. The pseudo-potential approach and the reductive perturbation technique are employed for this study. It is found from both weakly and highly nonlinear analyses that the dusty plasma model can support solitary waves only with negative potential but not with positive potential. The effects of equilibrium free electron density and its temperature on these solitary structures are discussed. The implications of these results to some astrophysical and space plasma systems, especially to planetary ring-systems and cometary tails, are briefly mentioned.
Document Type: Regular Paper
Affiliations: The Abdus Salam International Centre for Theoretical Physics, P.O.Box 586, Trieste, Italy
Publication date: January 1, 1999