The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation

doi:10.1088/1674-1056/17/7/042

中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2594-2599.doi: 10.1088/1674-1056/17/7/042

The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation

薛具奎¹, 张丽萍²

(1)College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; (2)School of sciences, Lanzhou University of Technology, Lanzhou 730050, China

收稿日期:2007-06-29 修回日期:2007-11-03 出版日期:2008-07-09 发布日期:2008-07-09
基金资助:
Project supported by the National Natural Foundation of China (Grant Nos 10475066 and 10347006).

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)

^a School of sciences, Lanzhou University of Technology, Lanzhou 730050, China; ^b College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China

Received:2007-06-29 Revised:2007-11-03 Online:2008-07-09 Published:2008-07-09
Supported by:
Project supported by the National Natural Foundation of China (Grant Nos 10475066 and 10347006).

摘要/Abstract

摘要： 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.

关键词: instability of low frequency waves, inhomogeneity, non-adiabatic dust charge variation

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.

Key words: instability of low frequency waves, inhomogeneity, non-adiabatic dust charge variation

中图分类号: (Dusty or complex plasmas; plasma crystals)

52.27.Lw

52.25.Gj (Fluctuation and chaos phenomena) 52.35.Fp (Electrostatic waves and oscillations (e.g., ion-acoustic waves)) 52.35.Qz (Microinstabilities (ion-acoustic, two-stream, loss-cone, beam-plasma, drift, ion- or electron-cyclotron, etc.))

张丽萍, 薛具奎. The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation[J]. 中国物理B, 2008, 17(7): 2594-2599.

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[J]. Chin. Phys. B, 2008, 17(7): 2594-2599.

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The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation

The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation

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