Influence of hydrogen on (Ne + H2) hollow cathode discharge characteristics

V. Mihailov; V. Gencheva; R. Djulgerova; Dimo N. Astadjov; Nikola V. Sabotinov

doi:10.1117/12.347606

7 May 1999 Influence of hydrogen on (Ne + H₂) hollow cathode discharge characteristics

V. Mihailov, V. Gencheva, R. Djulgerova, Dimo N. Astadjov, Nikola V. Sabotinov

Proceedings Volume 3571, Tenth International School on Quantum Electronics: Laser Physics and Applications; (1999) https://doi.org/10.1117/12.347606
Event: 10th International School on Quantum Electronics: Lasers: Physics and Applications, 1998, Varna, Bulgaria

Abstract

The Hydrogen influence on (Ne+ H₂) hollow cathode discharge plasma characteristics has been studied. The discharge voltage/current characteristics have been registered and the electron temperatures and concentrations have ben measured by using Langmuir's probe technique in both pure Ne and (Ne + H₂) hollow cathode discharges as a function of H₂ concentration. The Hydrogen negative ion concentration has been obtained by the laser photodetachment method. The results show that small (up to 10%) concentrations of H₂ to Ne hollow cathode plasma improve the plasma conductivity and decrease the electron temperature. Negative hydrogen ions occur in (Ne + H₂) hollow cathode discharge. Their density with (Ne + 10%H₂) discharge is 2 X 10⁸ cm^-3 and they should be taken into account for a description of the plasma studied.

Citation Download Citation

V. Mihailov, V. Gencheva, R. Djulgerova, Dimo N. Astadjov, and Nikola V. Sabotinov "Influence of hydrogen on (Ne + H₂) hollow cathode discharge characteristics", Proc. SPIE 3571, Tenth International School on Quantum Electronics: Laser Physics and Applications, (7 May 1999); https://doi.org/10.1117/12.347606

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