Jingyu Gong, Zhipeng Liu, Jiulin Du
The dust-acoustic waves and their stability driven by a flowing dust plasma
when it cross through a static (target) dust plasma (the so-called permeating
dust plasma) are investigated when the components of the dust plasma obey the
power-law q-distributions in nonextensive statistics. The frequency, the growth
rate and the stability condition of the dust-acoustic waves are derived under
this physical situation, which express the effects of the nonextensivity as
well as the flowing dust plasma velocity on the dust-acoustic waves in this
dust plasma. The numerical results illustrate some new characteristics of the
dust-acoustic waves, which are different from those in the permeating dust
plasma when the plasma components are the Maxwellian distribution. In addition,
we show that the flowing dust plasma velocity has a significant effect on the
dust-acoustic waves in the permeating dust plasma with the power-law
q-distribution.
View original:
http://arxiv.org/abs/1202.0645
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