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The flashover phenomena in vacuum have been an interesting issue among many researchers in the fields of both electrical and electronic systems for more than half a century. However, the phenomena are so complicated and up to now the related mechanisms are still not understood clearly. In this paper the ICCD camera was used to grasp the dynamic flashover images on the surface of alumina ceramic in...
Essentially surface flashover across a solid in vacuum is considered as a kind of complicated surface and interface physical phenomena. Based on the concurrent electrical and optical measurements and microscopic observations, the research works of our group concentrate on the relationship between flashover and surface/interface condition of insulating materials. There are some different optical phenomena...
Optical investigation of flashover phenomena across silicon is performed in vacuum. A pulse waveform of ~0.4/2.5 mus is employed as stimulation source. The p100-type silicon wafers are the samples. The images of flashover growing are recorded by intensified charge couple device, and the corresponding waveforms of voltage and current are given. The results primarily suggest that the flashover across...
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