Analysis of nitrogen plasma generated by a pulsed plasma system near atmospheric pressure

Stable discharging of pure nitrogen can be maintained even at atmospheric pressure when alternative pulsed voltage is applied between two parallel plate electrodes. We evaluated the nitrogen plasma generated by an alternative pulsed voltage system. The excited nitrogen species in a pure nitrogen pla...

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Bibliographic Details
Published in:Journal of applied physics 2004-12, Vol.96 (11), p.6094-6096
Main Authors: Hayakawa, R., Yoshimura, T., Ashida, A., Fujimura, N., Kitahata, H., Yuasa, M.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ATMOSPHERIC PRESSURE
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRODES
EMISSION
EMISSION SPECTROSCOPY
NITROGEN
PLASMA
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
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Summary:Stable discharging of pure nitrogen can be maintained even at atmospheric pressure when alternative pulsed voltage is applied between two parallel plate electrodes. We evaluated the nitrogen plasma generated by an alternative pulsed voltage system. The excited nitrogen species in a pure nitrogen plasma was evaluated using optical emission spectroscopy. In the discharging space, the largest peak detected corresponded to the N2 second positive system. Additionally, the emission peaks from the excited nitrogen atom were detected at a pressure of as high as 45Torr. In the downstream space, we detected emission peaks from the N2 Herman’s infrared system as well as the N2 second positive system. The N2 (AΣu+3) state is considered to be the origin of the N2 Herman’s infrared system. The emission intensities from the N2 second positive system and the N2 Herman’s infrared system increase with increasing nitrogen gas pressure, whereas the emission intensity from the N2+ first negative system decreases.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1810202