中国物理B ›› 2017, Vol. 26 ›› Issue (9): 99201-099201.doi: 10.1088/1674-1056/26/9/099201

• GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS • 上一篇    下一篇

Air breakdown induced by the microwave with two mutually orthogonal and heterophase electric field components

Pengcheng Zhao(赵朋程), Lixin Guo(郭立新)   

  1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • 收稿日期:2017-03-06 修回日期:2017-04-13 出版日期:2017-09-05 发布日期:2017-09-05
  • 通讯作者: Pengcheng Zhao, Lixin Guo E-mail:pczhao@xidian.edu.cn;lxguo@xidian.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61501358, 61431010, and 61627901) and the Fundamental Research Funds for the Central Universities, China.

Air breakdown induced by the microwave with two mutually orthogonal and heterophase electric field components

Pengcheng Zhao(赵朋程), Lixin Guo(郭立新)   

  1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • Received:2017-03-06 Revised:2017-04-13 Online:2017-09-05 Published:2017-09-05
  • Contact: Pengcheng Zhao, Lixin Guo E-mail:pczhao@xidian.edu.cn;lxguo@xidian.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61501358, 61431010, and 61627901) and the Fundamental Research Funds for the Central Universities, China.

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摘要： The air breakdown is easily caused by the high-power microwave, which can have two mutually orthogonal and heterophase electric field components. For this case, the electron momentum conservation equation is employed to deduce the electric field power and effective electric field for heating electrons. Then the formula of the electric field power is introduced into the global model to simulate the air breakdown. The breakdown prediction from the global model agrees well with the experimental data. Simulation results show that the electron temperature is sensitive to the phase difference between the two electron field components, while the latter can affect obviously the growth of the electron density at low electron temperature amplitudes. The ionization of nitrogen and oxygen induces the growth of electron density, and the density loss due to the dissociative attachment and dissociative recombination is obvious only at low electron temperatures.

关键词: high power microwave, air breakdown, effective electric field, global model

Abstract: The air breakdown is easily caused by the high-power microwave, which can have two mutually orthogonal and heterophase electric field components. For this case, the electron momentum conservation equation is employed to deduce the electric field power and effective electric field for heating electrons. Then the formula of the electric field power is introduced into the global model to simulate the air breakdown. The breakdown prediction from the global model agrees well with the experimental data. Simulation results show that the electron temperature is sensitive to the phase difference between the two electron field components, while the latter can affect obviously the growth of the electron density at low electron temperature amplitudes. The ionization of nitrogen and oxygen induces the growth of electron density, and the density loss due to the dissociative attachment and dissociative recombination is obvious only at low electron temperatures.

Key words: high power microwave, air breakdown, effective electric field, global model

中图分类号:  (Electromagnetic wave propagation)

  • 92.60.Ta
51.50.+v (Electrical properties)