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

被引：3

作者：

Liu X. ^{[1
,2
]}

Xu Y. ^{[2
]}

Zhang X. ^{[1
]}

Wang B. ^{[1
]}

Li J. ^{[1
]}

Yang X. ^{[2
]}

机构：

[1] National Key Laboratory of Electro-Optic System Technology

[2] Laboratory of Plasma Physical Chemistry, Dalian University of Technology

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 10期

关键词：

Dielectric barrier discharge; Molecular vibrational temperature; Nitrogen; Spectrum diagnosis; Temporal evolution;

D O I：

10.3788/HPLPB20102210.2327

中图分类号：

学科分类号：

摘要：

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 2000 K to 3500 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 voltage and reduces with increasing pressure.

引用

页码：2327 / 2330

页数：3

共 10 条

[1] Kogelschatz U., Plasma Chemistry and Plasma Processing, (2003)
[2] Zhao H., Plasma Chemistry and Plasma Technics, (1993)
[3] Choi Y.H., Kim J.H., Paek K.H., Et al., Characteristics of atmospheric pressure N2 cold plasma torch using 60-Hz AC power and its application to polymer surface modification, Surf Coat Technol, 193, 1-3, pp. 319-324, (2005)
[4] Nagao I., Nishida M., Yukimura K., Et al., NOx removal using nitrogen gas activated by dielectric barrier discharge at atmospheric pressure, Vacuum, 65, 3-4, pp. 481-487, (2002)
[5] Yalin A.P., Zare R.N., Temporally resolved cavity ring-down spectroscopy in a pulsed nitrogen plasma, Appl Phys Lett, 81, 2, pp. 1409-1410, (2002)
[6] Wang W., Study of radicals in pulsed corona discharge by emission spectroscopy, Spectroscopy and Spectral Analysis, 24, 11, pp. 1288-1292, (2004)
[7] Herzberg G., Molecular Spectra and Molecular Structure-I, (1983)
[8] Nicholls R.W., Laboratory astrophysics, J Quant Spectrosc Radiat Transfer, 2, pp. 433-439, (1962)
[9] Shemansky D.E., Broadfoot A.L., Excitation of N2 and N2+ systems by electrons-I Absolute transition probabilities, J Quant Spectrosc Radiat Transfer, 11, pp. 1385-1400, (1971)
[10] Wang N., Study of the DBD microstreamer diagnosis at atmospheric pressure, (2007)

← 1 →