FIELD: laser equipment. SUBSTANCE: laser has at least one pair of discharge tubes, each being provided with two electrodes and connected to collectors coupled to gas-dynamic circuit including fan and heat exchanger. Electrodes are placed outside of discharge tubes on their ends and are fabricated in the form of half of hollow torus. Discharge tubes are positioned in case manufactured in the form of two coaxial tubes from heat-resistant dielectric material. In space between tubes there are installed longitudinal ribs forming three collectors together with walls of tubes of case which enter gas-dynamic circuit for pumping through gas mixture. EFFECT: enhanced operational efficiency and reliability. 2 dwg
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