Herein, COMSOL Multiphysics is proposed to discuss the electric field distribution of synthetic sample during the high voltage pulse discharge crushing. The pulses number required for high voltage pulse discharge to crush the synthetic sample filled with magnetite is lower than that required for quartz-filled samples. The embedding mode that the magnetite is located on the central line between the high voltage electrode and the grounding electrode of the synthetic sample is most conducive to electrical breakdown of synthetic sample. The discharge channel developed along the magnetite edge and retains the complete crystal form of magnetite. Differences in dielectric constants are responsible for variations in electric field distribution. Magnetite alters the distribution state of electric field within synthetic samples to derive higher electric field intensity and more extensive areas with high electric field intensity. The peak electric field intensity at the interface of magnetite particles is higher than that of quartz. The presence of quartz particles hinders the development of certain discharge channels.

中文翻译：

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高压脉冲放电下合成样品选择性破裂的新见解：电场分布的数值模拟


本文提出利用 COMSOL Multiphysics 来讨论合成样品在高压脉冲放电破碎过程中的电场分布。高压脉冲放电粉碎填充磁铁矿的合成样品所需的脉冲数低于填充石英的样品所需的脉冲数。磁铁矿位于合成样品的高压电极和接地电极之间的中心线上的嵌入方式最有利于合成样品的电击穿。放电通道沿磁铁矿边缘发育，保留了磁铁矿完整的晶型。介电常数的差异导致电场分布的变化。磁铁矿改变了合成样品内电场的分布状态，以获得更高的电场强度和更广泛的高电场强度区域。磁铁矿颗粒界面处的峰值电场强度高于石英。石英颗粒的存在阻碍了某些放电通道的发展。