Formation and migration of space charge packet in low density polyethylene

  • Zheng Feihu 
  • Zhang Yewen 
  • Gong Bin 
  • Zhu Jianwei 
  • Wu Changshun 


Pressure wave propagation (PWP) method was utilized to observe the space charges packet-like behavior in sheet samples of low-density polyethylene (LDPE) under the relative low electric field. The experimental results show that space charge packets are always generated at the anode and move across the sample to the cathode regardless of the polarity of DC voltage. This paper discusses the migration of space charge packets at 30–40°C, the possible charge resource of space charge packets carriers and trap level of the space charge.


solid dielectric low-density polyethylene space charge packet trap 


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Copyright information

© Science in China Press 2005

Authors and Affiliations

  • Zheng Feihu 
    • 1
  • Zhang Yewen 
    • 1
  • Gong Bin 
    • 1
  • Zhu Jianwei 
    • 1
  • Wu Changshun 
    • 2
  1. 1.Pohl Institute of Solid State PhysicsTongji UniversityShanghaiChina
  2. 2.China National Center for Quality Supervision and Test of Electric Ware and CableShanghaiChina

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