Publications

Determination of NO densities in a surface dielectric barrier discharge using optical emission spectroscopy

Offerhaus, B. and Kogelheide, F. and Jalat, D. and Bibinov, N. and Schulze, J. and Stapelmann, K. and Awakowicz, P.

JOURNAL OF APPLIED PHYSICS
Volume: 126 Pages:
DOI: 10.1063/1.5094894
Published: 2019

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 ς u +). © 2019 Author(s).

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