M M Masud
Articles written in Pramana – Journal of Physics
Volume 81 Issue 1 July 2013 pp 169-176 Research Articles
Nonlinear propagation of ion-acoustic (
Volume 84 Issue 1 January 2015 pp 137-144
The properties of dust-ion-acoustic Gardner double layers (DIA GDLs) in an unmagnetized dusty plasma, whose constituents are negatively-charged stationary dust, inertial ions, and Boltzmann electrons of two distinct temperatures, are rigorously investigated by employing the reductive perturbation method: Gardner approach. The standard Gardner equation is derived, and its double layer (DL) solution is obtained. It has been shown that the properties of the DIA GDLs are significantly modified by some plasma parameters (viz. 𝜎 = 𝑇e1/𝑇e2, 𝜇e1 = 𝑛e10/𝑛i0, and 𝜇e2 = 𝑛e20/𝑛i0, where 𝑇e1 (𝑇e2) is the cold (hot) electron temperature, 𝑛e10 (𝑛e20) is the cold (hot) electron number density at equilibrium, and 𝑛i0 is the ion number density at equilibrium). The implications of our investigation in understanding the basic features of nonlinear electrostatic perturbations observed in many space plasma systems and laboratory devices are briefly discussed.
Volume 93 | Issue 5
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