Determination of NO densities in a surface dielectric barrier discharge using optical emission spectroscopy
Abstract
A new computationally assisted diagnostic to measure NO densities in atmospheric-pressure microplasmas by Optical Emission Spectroscopy (OES) is developed and validated against absorption spectroscopy in a volume Dielectric Barrier Discharge (DBD). The OES method is then applied to a twin surface DBD operated in N 2 to measure the NO density as a function of the O 2 admixture ( 0.1 %- 1 %). The underlying rate equation model reveals that NO ( A 2 Σ + ) is primarily excited by reactions of the ground state NO ( X 2 Π ) with metastables N 2 ( A 3 Σu + ).
- Publication:
-
Journal of Applied Physics
- Pub Date:
- November 2019
- DOI:
- 10.1063/1.5094894
- Bibcode:
- 2019JAP...126s3301O