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Plasma Physics Reports

, Volume 45, Issue 4, pp 397–400 | Cite as

Effect of Nitrogen Additive on Inhomogeneous Microwave Discharge in Hydrogen at Reduced Pressures

  • Yu. A. LebedevEmail author
  • A. V. Tatarinov
  • I. L. Epstein
LOW-TEMPERATURE PLASMA
  • 19 Downloads

Abstract

The effect of a small nitrogen additive on a microwave discharge in hydrogen ignited near the antenna at a pressure of 1 Torr was studied by emission spectroscopy and visualization methods. It is shown that, in the presence of a nitrogen additive, the discharge shifts along the antenna toward the generator and the intensities of hydrogen spectral lines and bands near the antenna decrease. These results are qualitatively explained on the basis of the earlier 1D simulation of the discharge. The changes in the discharge parameters are caused by the replacement of the light \({\text{H}}_{3}^{ + }\) ion in hydrogen plasma with the heavy N2H+ ion in a discharge in a hydrogen–nitrogen mixture. As a result, the rate of diffusive particle loss decreases, so that the discharge can exist in regions with a weaker microwave field.

Notes

FUNDING

This work was carried out within the State Program of the Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • Yu. A. Lebedev
    • 1
    Email author
  • A. V. Tatarinov
    • 1
  • I. L. Epstein
    • 1
  1. 1.Topchiev Institute of Petrochemical Synthesis of the Russian Academy of Sciences (TIPS RAS)MoscowRussia

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