Arbitrary amplitude dust acoustic solitary waves and double layers in nonthermal plasma including the effect of dust temperature
- Department of Mathematics, Jadavpur University, Kolkata 700 032 (India)
- Department of Applied Mathematics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata 700 009 (India)
A computational scheme has been developed to study the arbitrary amplitude dust acoustic solitary waves and double layers in nonthermal plasma consisting of negatively charged dust grains, nonthermal ions, and isothermal electrons including the effect of dust temperature. The Sagdeev potential approach, which is valid to study the arbitrary amplitude solitary waves and double layers, has been employed. The computation has been carried out over the entire interval of {beta}{sub 1}:0{<=}{beta}{sub 1}<{beta}{sub M}. This {beta}{sub 1} is a parameter associated with the nonthermal distribution of ions and {beta}{sub M} is the upper bound of {beta}{sub 1}. Depending on the nature of existence of solitary waves and double layers, the interval for {beta}{sub 1} can be broken up into four disjoint subintervals holding the other parameters fixed. By nature of existence of solitary waves and double layers, it is meant that in some subinterval only negative potential solitary waves can exist, whereas in another both negative and positive potential solitary waves can coexist along with a double layer, etc. Corresponding to every {beta}{sub 1} lying within a subinterval of {beta}{sub 1}, there is a definite interval for the Mach number (definite value of the Mach number) for which there exists solitary waves (double layer) specific for that subinterval of {beta}{sub 1}. The role of dust temperature on the subintervals of {beta}{sub 1} and on amplitude of solitary waves and double layers has been explored.
- OSTI ID:
- 21277337
- Journal Information:
- Physics of Plasmas, Vol. 16, Issue 7; Other Information: DOI: 10.1063/1.3170900; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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