| 光谱学与光谱分析 |
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| Study of Emission Spectra of N Atom Generated in Multi-Needle-to-Plate Corona Discharge |
| GE Hui1, YU Ran1, ZHANG Lu1, MI Dong2, ZHU Yi-min1* |
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 nitrogen (N) atom produced by multi-needle-to-plate negative corona discharge in air were detected successfully at one atmosphere, and the excited transition spectral line at 674.5 nm with maximum value of relative intensity was selected to investigate the influences of air and electrical parameters on N atom relative density. The results indicate that N atom relative density in ionization region increases with the increase in power; decreases with increasing discharge gap and relative humidity; and with the increase in N2 content, the relative density of N active atom firstly increases and then decreases. Under present experimental conditions, the maximum value of N atom relative density appears at the axial distance from needle point r=1 mm.
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Received: 2011-11-21
Accepted: 2012-02-20
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Corresponding Authors:
ZHU Yi-min
E-mail: ntp@dlmu.edu.cn
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