The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation
Zhang Li-Ping(张丽萍)a)† and Xue Ju-Kui(薛具奎)b)
aSchool of sciences, Lanzhou University of Technology, Lanzhou 730050, China; bCollege of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
Abstract This paper investigates the propagation of linear dust acoustic waves in inhomogeneous dusty plasmas due to spatial gradients of dust charge, plasma densities. A linear dispersion relation is obtained with the non-adiabatic dust charge fluctuation and the non-thermally distributed ions. The numerical results show that the inhomogeneity, non-thermal ions and non-adiabatic dust charge fluctuation have strong influence on the frequency and the damping rate of waves.
Received: 29 June 2007
Revised: 03 November 2007
Accepted manuscript online:
(Microinstabilities (ion-acoustic, two-stream, loss-cone, beam-plasma, drift, ion- or electron-cyclotron, etc.))
Fund: Project
supported by the National Natural Foundation of China (Grant Nos
10475066 and 10347006).
Cite this article:
Zhang Li-Ping(张丽萍) and Xue Ju-Kui(薛具奎) The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation 2008 Chin. Phys. B 17 2594
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