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Proceedings Paper

Experimental research of pulsed discharge in oxygen mixtures
Author(s): Xueling Zhang; Xinbing Wang; Guofu Li; Yanzhao Lu
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Paper Abstract

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.

Paper Details

Date Published: 18 February 2009
PDF: 5 pages
Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 72761R (18 February 2009); doi: 10.1117/12.823270
Show Author Affiliations
Xueling Zhang, Huazhong Univ. of Science and Technology (China)
Xinbing Wang, Huazhong Univ. of Science and Technology (China)
Guofu Li, Dalian Institute of Chemical Physics (China)
Yanzhao Lu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7276:
Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications
Peixiang Lu; Katsumi Midorikawa; Bernd Wilhelmi, Editor(s)

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