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18 February 2009 Experimental research of pulsed discharge in oxygen mixtures
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The pulsed discharge in oxygen and its mixtures to produce singlet delta oxygen has been studied experimentally at gas pressure of 30~ 936mBar. As singlet sigma state of oxygen O2(b1Σg+) and atomic oxygen O have great influence on the yield of singlet delta oxygen O2(a1g), the visible spectrum of O2(b1Σg+) at 762nm and O at 778nm have been measured, and the effects of argon, helium and carbon monoxide have been discussed. The electric stability was better in O2-He than in O2-Ar mixtures, while it could be increased quickly with a small amount of CO. In O2-He mixtures more oxygen were decomposed than in O2-Ar mixtures, while adding CO the decomposition was reduced, the amount of atomic oxygen was decreased, and the O2(b1Σg+) was increased comparatively. The time-resolved spectrum of the plasma has also been measured. The life-time of atomic oxygen was longer than O2(b1Σg+)'s, and it could be shorten with argon.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xueling Zhang, Xinbing Wang, Guofu Li, and Yanzhao Lu "Experimental research of pulsed discharge in oxygen mixtures", Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 72761R (18 February 2009);


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