%0 Journal Article
%T Numerical simulation of charge packet behavior in low-density polyethylene based on Gunn effect-like model<br>基于类耿氏效应的低密度聚乙烯中空间电荷包行为的模拟仿真
%A Xia Jun-Feng
%A Zhang Ye-Wen
%A Zheng Fei-Hu
%A Lei Qing-Quan
%A <br>夏俊峰
%A 张冶文
%A 郑飞虎
%A 雷清泉
%J 物理学报
%D 2010
%I 
%X Packet-like space charge behavior usually induces the electric field distortion and strongly affects the electrical performance of low-density polyethylene. In this paper, we analyze the influence of charge injection, carriers migration and interaction between the free charge and trap in polyethylene on packet-like space charge behavior and introduce the mechanism of Gunn effect to describe the generating process of space charge packet. Based on this, we simulated two kinds of packet-like space charge behaviors with different variation trends and in different applied fields reported by different research groups. The simulated space charge packet shows very good fitting with the experiment data in both packet amplitude and migration velocity. The simulation results also indicate that the injection conditions and trap level depth play an important role in the diversity of packet-like space charge behavior.
%K packet-like charge
%K Gunn effect
%K numerical simulation
%K negative differential mobility<br>空间电荷包，
%K 耿氏效应，
%K 模拟仿真，
%K 负微分迁移率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=467257100B026FF270AA04D61BB47AE6&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=CA4FD0336C81A37A&sid=37F781FD8E744761&eid=C4BBAD7A2DCC89BC&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0