In this paper, the formation of imposed patterns due to placing a wide wire mesh (‘waffle’ electrode) in the bulk of a strongly magnetized ( B ⩾ 1 T) plasma is investigated both experimentally and numerically. A new double head electrostatic probe was designed for the experiments that allows for measurements of the floating potential beneath the mesh in the magnetized plasma. The measurements using this probe revealed that due to the presence of the ‘waffle’ electrode in the bulk of the magnetized plasma, an organized pattern appears in the plasma potential. As a result of this imposed pattern, when dust particles were added to the experiments, they became trapped beneath the edges of the ‘waffle’ electrode. The effects of placing a wire mesh in the bulk of a magnetized plasma were further investigated using fluid and particle-in-cell (PIC) simulations. These simulations were able to qualitatively reproduce the experimental observations. The results of the simulations show...

中文翻译：

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宽丝网在磁化等离子体中形成图案的实验观察和数值研究

在本文中，通过实验和数值研究了由于在强磁化（B⩾1 T）等离子体的主体中放置宽的金属丝网（“华夫”电极）而形成的图案。为实验设计了一种新的双头静电探针，该探针可以测量磁化等离子体中网孔下方的浮动电位。使用该探针进行的测量表明，由于大部分磁化等离子体中都存在“华夫”电极，因此等离子体电势中出现了有组织的模式。这种强加模式的结果是，当将尘埃颗粒添加到实验中时，它们被捕获在“华夫”电极边缘的下方。使用流体和细胞内颗粒（PIC）模拟，进一步研究了在大量磁化等离子体中放置丝网的效果。这些模拟能够定性地再现实验观察结果。仿真结果显示...