Temporal evolution of molecular vibrational temperature in filamentary dielectric barrier discharge in nitrogen at atmospheric pressure

liu xin; xu yong; zhang xiaoguang; wang biyi; li jianfeng; yang xuefeng

Volume 22 Issue 10

Sep. 2010

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(10): 0-

liu fan, wang jianhua, wang qiuliang, et al. Numerical modeling and design of atmospheric pressure microwave plasma jet[J]. High Power Laser and Particle Beams, 2011, 23.

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liu xin, xu yong, zhang xiaoguang, et al. Temporal evolution of molecular vibrational temperature in filamentary dielectric barrier discharge in nitrogen at atmospheric pressure[J]. High Power Laser and Particle Beams, 2010, 22.

liu fan, wang jianhua, wang qiuliang, et al. Numerical modeling and design of atmospheric pressure microwave plasma jet[J]. High Power Laser and Particle Beams, 2011, 23.

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Temporal evolution of molecular vibrational temperature in filamentary dielectric barrier discharge in nitrogen at atmospheric pressure

1.
National Key Laboratory of Electro-Optic System Technology,Sanhe 065201,China;
2.
Laboratory of Plasma Physical Chemistry,Dalian University of Technology,Dalian 116024,China

Publish Date: 2010-09-03

Abstract

Abstract

The experiment of filamentary dielectric barrier discharge (DBD) in nitrogen at atmospheric pressure has been studied, in which the needle-plate reactor was employed. The temporal evolution of vibrational temperature of the N2 (C3Πu→B3Πg) molecules was successfully recorded by optical emission spectrometry. And the N2 vibrational temperature was calculated at the different discharge voltage and pressure．The experiment results show that the molecular vibrational temperature of N2 ranges from 2 000 K to 3 500 K. It reduces with increasing time in both positive and negative semi-cycles of discharge, and it is always higher in the negative semi-cycle. The vibrational temperature rises with increasing discharge vol
- dielectric barrier discharge,
- spectrum diagnosis,
- nitrogen,
- molecular vibrational temperature,
- temporal evolution

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