Abstract
The experimental study of a repetitively pulsed chemical HF laser operating on a chain reaction F<sub>2</sub> +H<sub>2</sub>, initiated by the barrier electrical discharge with the inter-electrode gap 10 cm, with length of active medium 40 cm along optical axis has been carried out. The barrier electrical discharge with duration about 120 ns has shown a high stability, reliability and homogeneity at specific energy deposits up to 60 J / 1. At the repetition pulses rate 10 Hz with the depleted fluorine-hydrogen mixture (20 % F<sub>2</sub>, 5 % H<sub>2</sub>), the mean laser power 500 W (a specific energy for one laser pulse E/V ≈ 11.6 J / 1, technical efficiency of 15.6 %) is achieved. In the single pulse mode of the laser operation with the mixture 30 % F<sub>2</sub>, 12 % H<sub>2</sub> the maximum pulse energy E<sub>max</sub> = 100 J, the specific radiation energy E/V = 24 J / 1, the technical efficiency &hookn;tech = 28.4 % are obtained.
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