Towards understanding of high electric field phenomena in polymeric dielectrics

Understanding the response of polymeric insulating materials to high electric fields is not only scientifically challenge but also practically important. Significant amount of effort has been made over the years and it has been found that there are several anomalous phenomena occurred in polymeric dielectrics under high electric fields. In the present paper all these phenomena have been experimentally demonstrated but most importantly we view the observed phenomena originate from the same mechanism therefore have taken a coherent approach. A double injection model has been used to understand the observed phenomena under high fields. Simulations based the model reveal that the presence of bipolar charges is the key to explain these anomalous phenomena.