Shock waves in plasmas with charge fluctuating dust of opposite polarity

Publication Issue: 
Volume 30, Number 1-4, 2009
Page No: 
Date Received: 
Wednesday, August 5, 2009
Authors' Name: 
S. K. Paula
G. Mandalb
A. A. Mamunc
M. R. Amind
Authors' Affiliation and Address: 
aDepartment of Mathematics, The University of Asia Pacific, Dhanmondi, Dhaka, Bangladesh
b,dDepartment of Electronics & Communications Engineering, East West University, Mohakhali, Dhaka 1212, Bangladesh
cDepartment of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh

A dusty plasma system containing Boltzmann-distributed electrons and ions, mobile charge
fluctuating positive dust and charge fluctuating stationary negative dust has been
considered. The nonlinear propagation of the dust-acoustic (DA) waves in such a dusty
plasma has been investigated by employing the reductive perturbation method. It has been
found that the dust charge fluctuation is a source of dissipation, and is responsible for the
formation of DA shock waves in such a dusty plasma. The basic features of the DA shock
waves have been identified in this investigation which could be useful in understanding the
properties of localized space dusty plasmas. It has been proposed to design a new
laboratory experiment, which will be able to identify the basic features of the dust-acoustic
shock waves predicted in this theoretical investigation.

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