1. School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China 2. Navy Submarine Academy, Qingdao 266071, China 3. School of Environmental Science and Engineering, Jiangsu University, Zhenjiang 212013, China
Abstract：The emission spectra of pure oxygen in dielectric barrier discharge at atmospheric pressure were observed. Comparison between experimental and fitting spectra of oxygen A band (b1Σ＋g→X3Σ-g)(0, 0)was used to determine the gas temperature, and the electronic temperature was calculated from O Ⅰ lines. The causation of oxygen A band in atmospheric dielectric barrier discharge was discussed by means of analysis of producing and quenching approaches. The result showed that the electronic temperature, (11 800±400) K, was much higher than the gas temperature, (650±20) K. The emission from a1Δg or A3Σ＋u was not been observed, but atmospheric band with its resoluble rotational structure was measured.
Key words：Dielectric barrier discharge;Oxygen;Emission spectroscopy;Electronic temperature;Rotational temperature
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