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SMuK 2023 – scientific programme

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P: Fachverband Plasmaphysik

P 7: Atmospheric Pressure Plasmas and their Applications III

P 7.2: Talk

Tuesday, March 21, 2023, 17:15–17:30, CHE/0089

A comparison of the spatial distribution of H2O2 in the effluent of the kINPen-Sci and the COST Reference Microplasma Jet — •Levin Krös1, Ben Harris2, Andy Nave1, Erik Wagenaars2, and Jean-Pierre van Helden11Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany — 2York Plasma Institute, Department of Physics, University of York, UK

Cold atmospheric plasma jets (CAPJs) are utilised in biomedical applications, as they provide important reactive oxygen and nitrogen species (RONS) for the plasma cell interaction, such as H2O2. There are still open questions in the physical and chemical field regarding the production of the RONS. Where are they formed and how does the jet-type has an influence on their production? As a first step to resolve that question, the production of H2O2 in humidified helium is compared between the kINPen-Sci and the COST Reference Microplasma Jet. The small sample length (about 4 mm) combined with low number densities are a challenge for established absorption spectroscopic techniques. Continuous-wave cavity ring-down spectroscopy (cw-CRDS) is applied in order to increase the path length through the sample. The difference in the spatial distribution of H2O2 in the effluent between the jets will be discussed.

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