Decrease of Atomic Oxygen Concentration by Injection of He/NO2 Combination in Discharge Oxygen Iodine Lasers

Abstract

Abstract
In this research, the effect of He/NO2 injection to the post-discharge region of a electric discharge oxygen iodine-laser was studied by using three-dimensional (3D) fluent code. Probable chemical reactions resulted from the presence of‌‌ He/NO2 in post-discharge region were studied. Effect of He/NO2 combination on keeping the singlet oxygen molecule and depleting atomic oxygen along post-discharge region just before activation region of laser is evaluated. Optimum concentration and flow rate has investigated at special conditions. By changing the injection rate of He/NO2, in the case of 0.25 mmol/s and 2.1 mmol/s rates for NO2 and He, optimum value of injection, about 0.7 m/s, has been obtained.

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