光谱学与光谱分析 |
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Experimental Study on Spectra of Compressed Air Microwave Plasma |
LIU Yong-xi, ZHANG Gui-xin*, WANG Qiang, HOU Ling-yun |
Department of Electrical Engineering, Tsinghua University, Beijing 100084, China |
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Abstract Using a microwave plasma generator, compressed air microwave plasma was excited under 1~5 atm pressures. Under different pressures and different incident microwave power, the emission spectra of compressed air microwave plasma were studied with a spectra measuring system. The results show that continuum is significant at atmospheric pressure and the characteristic will be weakened as the pressure increases. The band spectra intensity will be reduced with the falling of the incident microwave power and the band spectra were still significant. The experimental results are valuable to studying the characteristics of compressed air microwave plasma and the generating conditions of NO active groups.
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Received: 2012-08-23
Accepted: 2012-12-26
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Corresponding Authors:
ZHANG Gui-xin
E-mail: guixin@mail.tsinghua.edu.cn
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