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P: Fachverband Plasmaphysik

P 18: Postersitzung

P 18.46: Poster

Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax

Emission spectroscopy of the effluent of a helium-nitrogen atmospheric pressure plasma — •Carmelo Setaro, Judith Golda, and Jan Benedikt — Institute of Experimental and Applied Physics, Kiel University, Germany

Atmospheric pressure plasma applications are established in the industrial and medical field and the number of applications are increasing. Most of these applications are based on the interaction between reactive species as well as radiation generated in the plasma source and the treated surface. Previous studies have shown that long-living nitrogen species in an afterglow can travel considerable distances along the plasma effluent [1]. However, the transport of energy responsible for emission in the effluent region is not fully understood, yet.

We used a helium atmospheric pressure plasma with an admixture of molecular nitrogen to create an afterglow in the effluent. An Echelle spectrometer was used to measure high-resolution spectra along the plasma source, both of the plasma and of the afterglow. The emitting species were identified and reaction kinetics were deduced from spatial emission profiles.

[1] S. Spiekermeier, Doctoral thesis, Ruhr-Universität Bochum, Universitätsbibliothek, 2017