Effects of the relative motion of different particles on the wave instability in dusty plasmas
Effects of the relative motion of different particles on the wave instability in dusty plasmas
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DOI：
10.1063/1.4882681
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发表时间：
2014-06
影响因子：
2.2
通讯作者：
Dong-ning Gao;X. Hong;Mai-mai Lin;J. Han;W. Duan;Lei Yang
中科院分区：
文献类型：
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作者：
Dong-ning Gao;X. Hong;Mai-mai Lin;J. Han;W. Duan;Lei Yang
对尘埃等离子体中的尘埃声波进行了理论研究。色散关系是从流体动力学模型获得的。研究发现，波频率取决于电子数密度、波数以及电子或离子的速度。还讨论了不稳定性对系统参数的依赖性。研究发现长波长波通常是不稳定的，这在等离子体物理学中可能是有用的，特别是在磁约束聚变系统或加速驱动系统中的带电束动力学中。
Theoretical study is carried out for the dust acoustic waves in a dusty plasma. The dispersion relation is obtained from the fluid dynamical model. It is found that the wave frequency depends on the electron number density, wave number, and the speed of electrons or ions. The dependencies of the instability on the system parameters are also discussed. It is found that the long wavelength wave is usually unstable, which may be useful in the plasma physics, especially in the magnetic confined fusion system or the charged beam dynamics in the accelerated driven system.