| 光谱学与光谱分析 |
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| Study of Characteristics of Excited O Atom Generated in Multi-Needle-to-Plate Corona Discharge by Emission Spectroscopy |
| GE Hui1, YAN Ling1, MI Dong2, ZHU Yi-min1*, ZHANG Lu1 |
1. Institute of Environment of Remediation, Dalian Maritime University, Dalian 116026, China
2. Department of Physics, Dalian Maritime University, Dalian 116026, China |
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Abstract The emission spectra of O(3p5P→3s5S02 777.4 nm) produced by multi-needle-to-plate negative corona discharge and positive streamer discharge in air were successfully recorded at one atmosphere. The influences of discharge power, electrode gap, content of N2 and relative humidity on the excited O atom production were investigated in negative corona discharge. Meanwhile, the distribution of relative density of excited O atom in discharge space was also studied in positive streamer discharge. The results indicate that, for negative corona discharge, the amount of O active atom increases with the increase in power, decreases with increased discharge gap. And with the increase in relative humidity and N2 content, its amount firstly increases and then decreases; whereas for positive corona discharge, the relative density of O active atom from needlepoint to plate firstly increases and then decreases.
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Received: 2011-08-04
Accepted: 2011-11-28
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Corresponding Authors:
ZHU Yi-min
E-mail: ntp@dlmu.edu.cn
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