A shock-tube experiment on gases mixing processes associated with CO2/N2 mixing gasdynamic laser

Synchronized operation of double shock tubes is made in nearly full automation. Recognizing the feasibility of the operation, a mixing process is studied of two different gases ejected from the separate nozzles after the respective shock compressions. The mass sampling probe developed for this experiment is used to detect the mole fraction distributions of gas species in the mixing region downstream from the nozzle exit. Test gases are CO2 and N2 whose mixture is used in the CO2/N2 gas-dynamic laser. Moreover, the effect of the gas-mixing process on small signal gain distributions is investigated.