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Plasma Generation in a Pulsed Mode of a Non-Self-Sustained Arc Discharge with a Hybrid Hot-and-hollow Cathode

  • V. V. DenisovEmail author
  • Yu. Kh. Akhmadeev
  • N. N. Koval
  • S. S. Kovalskii
  • N. N. Pedin
  • V. V. Yakovlev
PLASMA PHYSICS
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The results of investigation of pulsed burning modes of a non-self-sustained arc discharge with a combined hot-and-hollow cathode are presented. The principal discharge characteristics are measured at the currents up to 350 A and discharge burning voltages up to 200 V within the working pressure range 0.2–1 Pa. It is shown that an increase in the working pressure gives rise to an increase in the discharge current as a result of gas amplification, resulting from an improvement in the processes of fast electron energy utilization during gas ionization. The maximum resulting discharge current in a nitrogen atmosphere at a pressure of 0.8 Pa is found to be 550 A at the discharge burning voltage up to 200 V and the maximum pulsed power up to 80 kV. The concentration of plasma in the center of the ≈0.2 m3 chamber is found to be about 4·1017 m–3 at the density of the ion current from plasma approximately 6.5 mA/cm2 and the discharge pulsed power 18 kW.

Keywords

non-self-sustained arc discharge low pressure hot cathode pulsed burning mode current-voltage characteristics 

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • V. V. Denisov
    • 1
    Email author
  • Yu. Kh. Akhmadeev
    • 1
  • N. N. Koval
    • 1
  • S. S. Kovalskii
    • 1
  • N. N. Pedin
    • 1
  • V. V. Yakovlev
    • 1
  1. 1.Institute of High Current Electronics of the Siberian Branch of the Russian Academy of SciencesTomskRussia

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