Abstract
A shock tunnel facility is fabricated and used for the study of a supersonic flow CO chemical laser. A high temperature mixture of CS2, CS, SZ, S and Ar is produced in a shock tube, where the thermal dissociation of CS2 diluted in Ar is accomplished by a reflected shock wave. The shock heated mixture is exhausted through supersonic nozzles mounted at the end of the tube and mixed with the supersonic streams of O2. Then, the vibrationally excited CO molecules are produced in the mixed streams by a chain reaction between CS and O2 initiated by S atoms. The present paper shows that the shock tunnel facility is successfully used to study the dependence of the small signal gain coefficient on the plenum temperature, plenum pressure and the transition branch.
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