Packet-like charge behavior in various polyethylene

In our previous paper, we found an interesting packet-like charge behavior in low-density polyethylene (LDPE) under high DC electric field of more than 100 kV/mm. By existence of the injected huge amount of packet-like charge, electric field near cathode electrode was sometimes enhanced up to more than twice of the applied electric field. Therefore, it is thought that the huge packet-like charge must strongly affect to breakdown characteristics of LDPE. To analyze the feature of packet-like charge behavior in LDPE, we have carried out a simple numerical simulation based on the experimental results in previous paper. Using a simple proposed model, we can simulate the measured results on LDPE very well. In the proposed model, by giving a few parameters of the sample, we can easily simulate the packet-like charge behavior. To investigate which parameter is dominant for the packet-like charge behavior, we attempt to apply our proposed model to various kinds of polyethylene which show different packet-like behavior from that in LDPE. In this report, we will show the comparison of simulated and measured results between LDPE and other kinds of polyethylene.