科研之友
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摘要
The instability of dust acoustic waves (DAWs) driven by ions and electrons with different drift velocities in an unmagnetized, collisionless, isotropic dusty plasma was investigated based on kinetic theory. The electrons, ions and dust particles are all modeled by using the generalized Lorentzian kappa distributions. It is found that the instability growth rate depends not only on the mass, temperature, density ratios of the components and ion-electron drift velocity ratio, but also on the spectral index for each component. The effects of the indices on the instability growth rate of DAWs have been discussed in detail.
- 出版日期2011-9
- 单位南昌大学
