Hannover 2020 – scientific programme

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P: Fachverband Plasmaphysik

P 16: Poster Session 3

P 16.18: Poster

Wednesday, March 11, 2020, 16:30–18:30, Empore Lichthof

Power measurement and balance of an rf-driven dielectric barrier atmospheric pressure plasma jet — •Tristan Winzer, Natascha Blosczyk, Judith Golda, and Jan Benedikt — Institute of Experimental and Applied Physics, Kiel University, Germany

Atmospheric pressure plasmas have received increasing attention in recent years due to their potential applications in industrial processes and in plasma medicine. Their non-equilibrium characteristics enable treatment of surfaces which are sensitive to heat. For all plasma processes, the power dissipated in the plasma is a key value. Its measurement is a requirement for comparison between different plasma sources, operating conditions and of experimental results with numerical models.

However, the accurate measurement of voltage, current and the phase shift between them is challenging in particular at rf-driven sources due to high frequencies. We therefore designed an experimental setup allowing us to measure these values with high stability and reproducibility. Using an oscilloscope and custom-designed software, we were able to monitor the power dissipated in an rf-driven dielectric barrier discharge operating at atmospheric pressure. The dependence on applied voltage and gas-mixture and a power balance will be presented.