Influence of arbitrarily charged dust and trapped electrons on propagation of localized dust ion-acoustic waves |
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| Authors: | H Alinejad |
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| Institution: | 1. Department of Physics, Faculty of Basic Science, Babol University of Technology, Babol, 47148-71167, Iran
2. Research Institute for Astronomy and Astrophysics of Maragha, P.O. Box 55134-441, Maragha, Iran
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| Abstract: | A theoretical investigation is developed to study the existence, formation and basic properties of arbitrary amplitude dust
ion-acoustic solitary potentials in a dusty plasma consisting of warm ions, trapped electrons and immobile negative (positive)
dust particles. It is found a definite interval for the Mach number for which solitary waves exist and depend sensitively
on the ion temperature and negative (positive) dust concentration. In addition, the effects of ion temperature, two oppositely
charged dust species and resonant electrons on the shape of the solitary waves are also investigated extensively. For both
cases of negative and positive dust grains, the effect of ion temperature is found to be destructive for the formation of
localized structures. Further, the amplitude of the solitary structures decreases (increases) with the increase in the negative
(positive) dust concentration. |
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