The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation |
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Authors: | Zhang Li-Ping and Xue Ju-Kui |
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Institution: | College of Physics and Electronic Engineering, Northwest
Normal University, Lanzhou 730070, China; School of sciences, Lanzhou University of Technology, Lanzhou 730050, China |
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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. |
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Keywords: | instability of low frequency
waves inhomogeneity non-adiabatic dust charge variation |
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