The relation between the production efficiency of nitrogen atoms and the electrical characteristics of a dielectric barrier discharge

TitleThe relation between the production efficiency of nitrogen atoms and the electrical characteristics of a dielectric barrier discharge
Publication TypeJournal Article
Year of Publication2015
AuthorsF.JJ Peeters, R. Yang, M.CM van de Sanden
JournalPlasma Sources Science and Technology
Volume24
Issue4
Number4
Pagination045006
Date Publishedaug
Abstract

In a nitrogen plasma jet, atomic nitrogen is the longest lived radical species and, through recombination, gives rise to highly reactive excited nitrogen species. In this paper, the atomic nitrogen concentration in the effluent of a nitrogen-fed dielectric barrier discharge (DBD) is determined by using direct 2D imaging of the visible FPS emission. The relationship between radical production and the electrical characteristics of the discharge is assessed by making use of an electrical model which assumes only a part of the electrode area is discharged every half-cycle. For the pure nitrogen jet used here, the specific energy input per nitrogen atom is found to be 320  ±  20 eV atom −1 , comparable to the specific energy for other atomic nitrogen sources in the literature. It is shown that the production efficiency of atomic nitrogen does not depend on the amplitude of the applied voltage of the DBD and any increase in radical production is due to an increase of the electrode area covered by the discharge, i.e. an increase in the number of microdischarges.

DOI10.1088/0963-0252/24/4/045006
Division

MaSF

Department

MaSF-E

PID

a617264fd7603a3d56cf6af0e5fda057

Alternate TitlePlasma Sources Sci. Technol.
LabelOA
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