The Effective Ionization of Air and Oxygen in a Near-Critical Electric Field at High Pressures

  • A. F. Aleksandrov
  • V. L. Bychkov
  • L. P. Grachev
  • I. I. Esakov
  • A. Yu. Lomteva
Elementary Physicochemical Processes


The effective ionization of air and oxygen at early stages of electric discharge development at medium and high pressures is analyzed. Ionization in an applied field with the participation of background electrons, electron sticking to and detachment from oxygen atoms and molecules, and recharging and conversion of negative ions is considered. The dependence of ion-molecular processes on external field is taken into account. The effective ionization value is shown to be different in constant and microwave fields. The effective air ionization values obtained in a microwave field are in agreement with the experimental data. It is shown that background electrons determine the possibility of effective ionization, whereas conversion processes determine the existence of a threshold E/N value, where E is the electric field strength and N is the density of neutral particles.


Glow Discharge Direct Ionization Homogeneous Part Ionization Threshold Interelectrode Distance 
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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • A. F. Aleksandrov
    • 1
  • V. L. Bychkov
    • 1
  • L. P. Grachev
    • 2
  • I. I. Esakov
    • 2
  • A. Yu. Lomteva
    • 1
  1. 1.Moscow State UniversityMoscowRussia
  2. 2.Moscow Radiotechnical InstituteRussian Academy of SciencesMoscowRussia

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