Buffer gas mixing with active gas on chemical oxygen-iodine laser performance with jet type SOG

Marsel V. Zagidullin; Valeri D. Nikolaev; Michael I. Svistun; Vladimir S. Safonov; Nikolay I. Ufimtsev

doi:10.1117/12.236885

29 March 1996 Buffer gas mixing with active gas on chemical oxygen-iodine laser performance with jet type SOG

Marsel V. Zagidullin, Valeri D. Nikolaev, Michael I. Svistun, Vladimir S. Safonov, Nikolay I. Ufimtsev

Proceedings Volume 2702, Gas and Chemical Lasers; (1996) https://doi.org/10.1117/12.236885
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The increasing of stagnation pressure and Re number of gas flow is a very important for supersonic oxygen-iodine laser (COIL). This goal can be achieved with the aid of high pressure singlet oxygen generator (SOG) and high dilution of oxygen with buffer gas of high molecular weight downstream of SOG. The study of COIL operated with jet type SOG at 10 and 20 mmole/s of chlorine flow rate and 50 torr output of pure oxygen is presented. Two experimental set-up were tested. In the first one the mixing of chlorine with buffer gas was provided upstream of SOG gas inlet. In the second one the pure chlorine was injected into SOG and oxygen was mixed with buffer gas downstream of SOG outlet. The stability of jet SOG in the first set-up strongly depended on partial buffer gas pressure and its molecular weight: at higher pressures and molecular weight the stability of SOG operation was worse. In the second set-up the operation of SOG didn't depend on buffer gas pressure and its molecular weight. COIL output power was highest for first set-up with dilution of chlorine by buffer gas until SOG stable operated. In the second set-up the output power was in twice less and strongly depend on type and position of buffer gas injector between SOG and iodine injector. This dependence strongly demonstrated the importance of gas mixing to molecular level for achieving highest COIL power. Another problem considered in this work is connected with BHP heating that important for recirculation of liquid in long time duration COIL operating system. The correlation of BHP heating and O₂(¹(Delta) ) yield is presented. It is shown that nacsent O₂(¹(Delta) ) yield is close to 100%.

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Marsel V. Zagidullin, Valeri D. Nikolaev, Michael I. Svistun, Vladimir S. Safonov, and Nikolay I. Ufimtsev "Buffer gas mixing with active gas on chemical oxygen-iodine laser performance with jet type SOG", Proc. SPIE 2702, Gas and Chemical Lasers, (29 March 1996); https://doi.org/10.1117/12.236885

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