首页> 中文期刊> 《中国物理快报:英文版》 >Abnormal Polarity Effects of Streamer Discharge in Propylene Carbonate under Microsecond Pulses

Abnormal Polarity Effects of Streamer Discharge in Propylene Carbonate under Microsecond Pulses

         

摘要

Propylene carbonate (PC) has a great potential to be used as an energy storage medium in the compact pulsed power sources due to its high dielectric constant and large resistivity.We investigate both the positive and negative breakdown characteristics of PC.The streamer patterns are obtained by ultra-high-speed cameras.The experimental results show that the positive breakdown voltage of PC is about 135% higher than the negative one,which is abnormal compared with the common liquid.The shape of the positive streamer is filamentary and branchy,while the negative streamer is tree-like and less branched.According to these experimental results,a charge layer structure model at the interface between the metal electrode and liquid is presented.It is suggested that the abnormal polarity effect basically arises from the electric field strength difference in the interface between both electrodes and PC.What is more,the recombination radiation and photoionization also play an important role in the whole discharge process.

著录项

  • 来源
    《中国物理快报:英文版》 |2017年第7期|254-257|共4页
  • 作者单位

    College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073;

    College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073;

    College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073;

    Chongqing Communication Institute, Chongqing 400035;

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  • 正文语种 eng
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