Optical Emission Analysis of Molecular Nitrogen by Using a Self-Resonating Dielectric Barrier Plasma Reactor

We present a spectroscopic investigation of molecular nitrogen using a self-resonating co-axial dielectric barrier plasma reactor. The properties of the nitrogen plasma generated were recorded as functions of radio frequency (27.12 MHz), power (20-50W) and gas pressure (0.1-60mbar). The intensity di...

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Published inChinese physics letters Vol. 29; no. 5; pp. 55201 - 1-055201-4
Main Authors Amry, A. M. A., Law, V. J., Boyd, I. W.
Format Journal Article
LanguageEnglish
Published 01.05.2012
Subjects
Barriers
Dielectrics
Electric power generation
Electronics
Gas pressure
Molecular structure
Plasma (physics)
Reactors
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Summary:We present a spectroscopic investigation of molecular nitrogen using a self-resonating co-axial dielectric barrier plasma reactor. The properties of the nitrogen plasma generated were recorded as functions of radio frequency (27.12 MHz), power (20-50W) and gas pressure (0.1-60mbar). The intensity distribution of the transitional structure of the electronic bands C super(3)[Pi] sub(u) arrow right B super(3)[Pi]g, B super(2)[Sigma] super(+) sub(u) arrow right X super(2)[Sigma] super(+) sub(g)and D super(2)[Pi] sub(g) arrow right A super(2)[Pi] sub(u)was measured as a function of gas pressure. Relative energy efficiency (total emitted intensity from the plasma I sub(t) divided by total electric power to the discharge P), as high as 14% can be obtained at a dissipated electrical power level of 20W and a pressure of 10 mbar.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/29/5/055201