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P: Fachverband Plasmaphysik

P 10: Poster Session 2

P 10.35: Poster

Dienstag, 10. März 2020, 16:30–18:30, Empore Lichthof

Two dimensional absolute density distributions of Nitric Oxide (NO) in the effluent of the "COST Reference Microplasma Jet" — •Patrick Preissing¹, Ihor Korolov², Volker Schulz-von der Gathen¹, and Marc Böke¹ — ¹Experimental Physics II, Ruhr-University Bochum, Bochum — ²Institute for Electrical Engineering and Plasma Technology, Ruhr-University Bochum, Bochum

In cold atmospheric pressure plasmas (CAPs) the heavy particles remain cold (i.e. near room temperature), while the electrons can be effectively heated. This leads to a high temperature chemistry with low thermal stress for the sample. Therefore, CAPs provide great properties for applications, such as for biomedical ones. In this context a robust, stable micro RF reference jet was developed with a high degree of reproducibility (COST reference jet). Owing to the non-equilibrium character various types of dissociation products are created. Species as for example Nitric Oxide or Ozone typically have longer lifetimes and are therefore likely candidates to interact with the treated sample. While at larger concentrations NO was found to be extremely harmful to the human body, at lower concentrations the molecule triggers many important biological processes as intercellular messenger and diffuses rapidly through most tissues which makes it an important component for tissue and wound treatments. In this work we present two dimensional, time averaged, absolute density distributions of NO in the effluent of the COST-Jet measured by means of Laser Induced Fluorescence (LIF). The measurements are performed within the framework of the SFB1316.