Gain obtained by injecting carbon dioxide gas into a supersonic stream containing carbon monoxide

An experimental investigation was made of the gain obtained by injecting CO₂ into a supersonic stream of the products of combustion of nitrogen compounds containing a considerable amount of CO. A study was made of the dependence of the gain on the ratio of the injected gas mass to the mass of the main stream and a gain of 2.5 m^–1 was obtained. It was found that mixtures containing a considerable amount of carbon monoxide should be suitable media for selectively excited gasdynamic lasers.