Gain measurement in a supersonic jet utilizing a D+O3+CO2 mixture

The gain at the 10.6-μ wavelength was measured in a supersonic jet in which a stream of argon and atomic deuterium was mixed with ozone and carbon dioxide. The atomic deuterium was formed by thermal dissociation behind a reflected shock wave and flowed out through a supersonic nozzle at whose edge the ozone and carbon dioxide were mixed in. A change in the ejector design, from that used previously, resulted in a considerable increase in the measured gain. The achievement of a gain of 2.1 m^–1 is reported.