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|Title:||Non-planar Gardner double layers in two-ion-temperature dusty plasma|
|Authors:||Asaduzzaman, M.; Mamun, A. A.; Mamun|
|Affiliation:||AA(Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh ()), AB(Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh ()), AC()|
|Publication:||Journal of Plasma Physics, Volume 78, Issue 6, pp. 601-606|
|Abstract Copyright:||(c) 2012: Copyright © Cambridge University Press 2012|
Non-planar (cylindrical and spherical) double layers (DLs) in
two-ion-temperature dusty plasma, whose constituents are inertial
negative dust, ions with two distinctive temperatures, and Boltzmann
electrons, are studied by employing the reductive perturbation method.
The modified Gardner equation describing the nonlinear propagation of
dust-acoustic (DA) waves is derived, and its non-planar double layer
solutions are analyzed numerically. The parametric regimes for the
existence of DA DLs, which are found to be associated with positive
potential only, are obtained. The basic features of non-planar DA DLs,
which are found to be different from planar ones, are also identified.
The implications of our results to different space and laboratory dusty
plasma situations are discussed.