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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...
As well known, the surface conditions of solid materials strongly affect the flashover phenomena under high electric field. The artificial doping ingredients could change the energy distribution and the density of electron and hole traps. The trapping parameters in the surface layer have some influences on the surface insulation strength. In order to adjust different trapping parameters, the composite...
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