On the wake structure in streaming complex plasmas
On the wake structure in streaming complex plasmas
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DOI：
10.1088/1367-2630/14/5/053016
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发表时间：
2012-05-15
影响因子：
3.3
通讯作者：
Bonitz, Michael
中科院分区：
文献类型：
--
作者：
Ludwig, Patrick;Miloch, Wojciech J.;Bonitz, Michael
复杂（尘埃）等离子体的理论描述需要多尺度的概念，充分结合流动的电子和离子，中性和尘埃颗粒的相互作用。了解了有效的尘-尘相互作用，可以有效地将多尺度问题简化为尘子系统的单组分等离子体模型。本文的目标是通过两种互补的方法系统地评估在流等离子体环境下粉尘颗粒周围的静电势分布：(i)从动态介电函数中高精度地计算动态屏蔽库仑势；（ii）全3D颗粒在电池中的模拟，其中自一致地包括动态颗粒充电和非线性效应。讨论了这两种方法的适用范围。
The theoretical description of complex (dusty) plasmas requires multiscale concepts that adequately incorporate the correlated interplay of streaming electrons and ions, neutrals and dust grains. Knowing the effective dust-dust interaction, the multiscale problem can be effectively reduced to a one-component plasma model of the dust subsystem. The goal of this paper is a systematic evaluation of the electrostatic potential distribution around a dust grain in the presence of a streaming plasma environment by means of two complementary approaches: (i) a high-precision computation of the dynamically screened Coulomb potential from the dynamic dielectric function and (ii) full 3D particle-in-cell simulations, which self-consistently include dynamical grain charging and nonlinear effects. The range of applicability of these two approaches is addressed.