论文标题
驱动的灰尘电荷波动和等离子体鞘和鞘区域的混乱离子动力学
Driven dust-charge fluctuation and chaotic ion dynamics in the plasma sheath and pre-sheath regions
论文作者
论文摘要
这项工作介绍了这项工作，可能存在由外部驱动的灰尘荷利，可能存在在灰尘等离子体的鞘和鞘区域中的混乱振荡。在复杂的等离子体中，由于电子和离子电流流入灰尘颗粒的变化，灰尘电荷波动随时间不断地发生。在大多数与尘埃波动有关的作品中，从理论上讲，假定平均灰尘电荷波动遵循等离子体扰动，而实际上，尘埃电荷波动是一种半随机现象，在某些平均值上波动。灰尘等离子体中灰尘充电波动的原因也表明，这些波动可以通过将电子和离子电流变为灰尘颗粒来外部驱动。 With the help of a \emph{hybrid}-Particle in Cell-Monte Carlo (\emph{h}-PIC-MCC) code in this work, we use the plasma sheath as a candidate for driving the dust-charge fluctuation by periodically exposing the sheath-side wall to UV radiation, causing photoemission of electrons, which in turn drive the dust-charge fluctuation.我们表明，这种\ emph {驱动}尘埃式波动可以在护套和鞘区域的离子动力学中引起混乱的响应。
Possible existence of chaotic oscillations in ion dynamics in the sheath and pre-sheath regions of a dusty plasma, induced by externally driven dust-charge fluctuation, is presented in this work. In a complex plasma, dust charge fluctuation occurs continuously with time due to the variation of electron and ions current flowing into the dust particles. In most of the works related to dust-charge fluctuation, theoretically it is assumed that the average dust-charge fluctuation follows the the plasma perturbation, while in reality, the dust-charge fluctuation is a semi-random phenomena, fluctuating about some average value. The very cause of dust-charge fluctuation in a dusty plasma also points to the fact that these fluctuations can be driven externally by changing electron and ion currents to the dust particles. With the help of a \emph{hybrid}-Particle in Cell-Monte Carlo (\emph{h}-PIC-MCC) code in this work, we use the plasma sheath as a candidate for driving the dust-charge fluctuation by periodically exposing the sheath-side wall to UV radiation, causing photoemission of electrons, which in turn drive the dust-charge fluctuation. We show that this \emph{driven} dust-charge fluctuation can induce a chaotic response in the ion dynamics in the sheath and the pre-sheath regions.
