Pulse Corona Plasma N <sub> 2 </ Sub> (C ~ 3¦° <sub> U </ Sub> ¡ú B ~ 3¦° <sub> G </ Sub>) Spectroscopy Experiments

The pulse corona induced non-thermal plasma chemical process is a technique applied to pollution control. It is researched actively in recent decades. Many research papers about removal effect have been published, but there are a few research papers about active particles diagnosis. This basic problem will influence the detailed studies and industry application of this technique. The lifetime of active particles produced by pulse corona discharge is very short, so we investigated the emission spectrum of N2(C3Пu-B3Пg) by means of emission spectrum method. The following results are obtained.1. A wire-cylinder reactor is designed which is fit for spectrum experiment. Matching a corona plasma reactor to a high-voltage pulse generator is very important. Not only the energy transfer costs can be reduced, but also the removal rate can be improved. By means of experiment, the system presents good matching connection.2. The relationships between N2(C3Пu- B3Пg) emission spectrum relative intensity and voltage polarity, peak voltage, repetition frequency are measured at room temperature and atmospheric pressure by means of emission spectrum method which is advantage and practical for plasma characteristic diagnosis. The relative intensity of emission spectrum induced by positive, negative or bipolar pulse corona all rise with increasing peak voltage and repetition frequency.3. The positive, negative and bipolar pulse corona induced N2(C3Пu-B3Пg) emission spectrum relative intensity radial distribution in wire-cylinder reactor at room temperature and atmospheric pressure are measured. The results show that the electronic density decreased nonlinearly with the increase of radial distance.4. The N2(C3Пu-B3Пg) emission spectrum relative intensity produced by positive, negative and bipolar pulse corona discharge in the air or in N2 are compared, and the experimental results are explained.