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arXiv physics/0701336physics.plasm-phphysics.space-ph
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粉尘颗粒电荷起伏及其对粉尘声波阻尼的影响

Charge Fluctuation of Dust Grain and Its Impact on Dusty-Acoustic Wave Damping

B. Atamaniuk, K. Zuchowski

摘要:

我们考虑了尘埃电荷涨落对尘埃离子声波阻尼的影响。假设所有的粒子都有相等的质量,但电荷在时间上并不恒定-它们可能会随时间波动。尘埃电荷并不是真的与等离子体电势的变化无关。所有模式都会影响充电机制,反馈会导致一些新的有趣和意想不到的现象。颗粒的充电取决于局部等离子体特性。如果波干扰了这些特性,则颗粒的充电受到影响,并且颗粒电荷被修改,从而导致对波模式的反馈。在这里考虑的情况下,当电子的温度远大于离子的温度,并且电子的温度不足以使离子进一步电离时,我们表明声波的衰减仅取决于一个唯象系数

英文摘要:

We consider the influence of dust charge fluctuations on damping of the dust-ion-acoustic waves. It is assumed that all grains have equal masses but charges are not constant in time - they may fluctuate in time. The dust charges are not really independent of the variations in the plasma potentials. All modes will influence the charging mechanism, and feedback will lead to several new interesting and unexpected phenomena. The charging of the grains depends on local plasma characteristics. If the waves disturb these characteristic, then charging of the grains is affected and the grain charge is modified, with a resulting feedback on the wave mode. In the case considered here, when the temperature of electrons is much greater than the temperature of the ions and the temperature of electrons is not great enough for further ionization of the ions, we show that attenuation of the acoustic wave depends only on one phenomenological coefficient

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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