Abstract

An investigation was made of the influence of the voltage risetime on the characteristics of a self-sustained volume discharge in CO2–N2–He mixtures. When the region near the cathode was subjected to intense and prolonged ultraviolet irradiation, the use of a pumping regime with a deliberately prolonged voltage risetime made it possible to obtain a volume discharge in an electrode system having a highly inhomogeneous electric field at its edges, and to raise the CO2 laser efficiency.

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