The spatiotemporal dynamics of volume and surface positive and negative streamers in a pin‐to‐plate volume dielectric barrier discharge is investigated in this study. The discharge characteristics are found to be completely different for positive and negative streamers. First, the spatial propagation of a positive streamer is found to rely on electron avalanches caused by photoelectrons in front of the streamer head, whereas this is not the case for negative streamers. Second, our simulations reveal an interesting phenomenon of floating positive surface discharges, which develop when a positive streamer reaches a dielectric wall and which explain the experimentally observed branching characteristics. Third, we report for the first time, the interactions between a positive streamer and dielectric pores, in which both the pore diameter and depth affect the evolution of a positive streamer.

中文翻译：

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带平面和多孔电极的体积介电势垒放电中正负流的传播

在这项研究中，研究了针到板的体积介电势垒放电中的体积以及表面正负流的时空动力学。发现正负流光的放电特性完全不同。首先，发现正向拖缆的空间传播依赖于由拖缆头前面的光电子引起的电子雪崩，而负向拖缆则不是这种情况。其次，我们的模拟揭示了一个有趣的浮动的正表面放电现象，当正向流光到达电介质壁时会产生这种现象，并解释了实验观察到的分支特性。第三，我们首次报道了正流光与电介质孔之间的相互作用，