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首页> 外文期刊>Physics of plasmas >Screening in weakly ionized dusty plasmas; Effect of dust density perturbations
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Screening in weakly ionized dusty plasmas; Effect of dust density perturbations

机译：筛选弱电离的多尘等离子体;尘埃密度扰动的影响

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摘要

The screening of the charge of a non-emitting dust grain immersed in a weakly ionized dusty plasma is studied on the basis of a self-consistent hydrodynamic description. The dust number density is considered large enough so that the test grain is not isolated from other grains and dust collective effects are important. Not only dust charge perturbations but also dust density perturbations are taken into account, the latter are shown to have a strong effect on both the short and long range part of the potential. The realization of collective attraction via the newly obtained potential is discussed, a mechanism that could be central to the understanding of phase-transitions and self-organization processes in dusty plasmas.
机译：基于自洽流体力学描述，研究了浸没在弱电离尘埃等离子体中的不发光尘埃的电荷的筛选。尘埃数密度被认为足够大，以使得测试颗粒不会与其他颗粒分离，并且尘埃聚集效应很重要。不仅考虑了粉尘电荷扰动，而且考虑了粉尘密度扰动，后者显示出对电势的短程和长程部分均具有强烈影响。讨论了通过新获得的电势实现集体吸引的机制，该机制对于理解尘土等离子体中的相变和自组织过程可能至关重要。

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