High power water switches: postbreakdown phenomena and dielectric recovery
High power water switches: postbreakdown phenomena and dielectric recovery
复制标题
高功率水开关：击穿后现象和介电恢复
DOI：
10.1109/tdei.2004.1324350
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发表时间：
2004
影响因子：
3.1
通讯作者：
K. Schoenbach
中科院分区：
文献类型：
--
作者：
S. Xiao;J. Kolb;S. Kono;S. Katsuki;R. Joshi;M. Laroussi;K. Schoenbach
使用电学和光学诊断学研究了由亚毫米间隙分开的平面和半球形电极之间的水电击穿的物理过程。膨胀的等离子体柱击穿后产生的第一冲击波，并在稍后阶段的蒸汽泡，其膨胀约200 /spl mu/s，然后衰减的时间常数为1毫秒。气泡的衰减时间确定的开关的介电恢复已被示出与脉冲探针实验。
The physical processes following the electrical breakdown of water between planar and hemispherical electrodes separated by a sub-millimeter gap have been studied using electrical and optical diagnostics. The expanding plasma column after breakdown generates first shockwaves and at a later stage a vapor bubble which expands for about 200 /spl mu/s and then decays with a time constant of I ms. The bubble decay time determines the dielectric recovery of the switch as has been shown with pulse-probe experiments.