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P: Fachverband Plasmaphysik

P 16: Poster Session Plasma Physics

P 16.59: Poster

Donnerstag, 19. März 2026, 13:45–15:45, Redoutensaal

Modelling and experimental study of decomposition dynamics of nitric oxide in a helium radio frequency atmospheric pressure discharge — •Marjan Stankov¹, Florian Sigeneger¹, Ronny Brandenburg^1,2, Eva Wolfe³, Aditya Bhan³, and Peter Bruggeman⁴ — ¹Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany — ²Institute of Physics, University of Rostock, Rostock, Germany — ³Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA — ⁴Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA

The reduction of nitric oxide (NO) in a helium radio frequency (13.56 MHz) atmospheric pressure plasma jet has been investigated using combined modelling and experimental approaches. The plasma jet under investigation comprises a quartz tube, a tungsten needle as the inner electrode, and a copper ring as the outer electrode. Using a plug-flow model, the modelling study couples particle balance equations for the considered species, mean electron energy equation and a heat equation, taking into account He-NO chemistry involving approximately 300 volume and surface reactions. The modelling results are validated using molecular beam mass spectrometry measurements of NO, N₂, O₂, O and NO₂ over a range of input powers, gas flow rates and initial NO concentrations. The model reproduces the measured trends, identifies the production and loss channels for the species considered, and reveals how varied parameters influence NO decomposition. This work has been funded by the DFG-NSF project no. 509169873.

Keywords: Plasma jet; Atmospheric pressure; Helium; Nitric oxide