Results of studies of an EB-controlled discharge in a pulse-periodic CO2 laser are given. The conclusion on the expediency ofthe change in the traditional transverse scheme of the gas mixture circulation through the discharge region for the longitudinal one is made. This gives an appreciable increase in the of an EB-controlled discharge stability, laser radiation efficiency and lower divergency of an output beam. It is shown that a laser with the longitudinal circulation scheme offers the efficiency by 1.5 fold exceeding that of a laser with the transverse scheme and 1.8 times higher beam brightness on the polar diagram axis in the far field. Based on the obtained data, an experimental prototype of the technological CO2 laser providing an average output power ofmore than 10 kW in the pulse-periodic mode at the beam divergency ofnot more than 0.42 mrad is constructed.
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