Göttingen 2025 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 10: Poster Session I

P 10.3: Poster

Dienstag, 1. April 2025, 16:15–18:15, ZHG Foyer 1. OG

Characterization of different DCSBD designs using plasma diagnostics — •Henry von Wichert¹, Jianyu Feng², Tobias Hahn¹, and Holger Kersten¹ — ¹Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, Germany — ²Department of Plasma Physics and Technology, Masaryk University, Brno, Czech Republic

Atmospheric pressure plasma jets are effective for treating surfaces. To modify larger areas efficiently, a curtain-shaped jet can be used by positioning two surface barrier discharges (DCSBDs) facing each other. Here, we characterize different designs of the jets and the DCSBD units themselves by various diagnostics.

The energy flux from the discharge to the substrate was measured at different distances and power levels using passive thermal probes. These were compared with the total electrical power consumed by the discharge, estimating the energy efficiency of the setup.

Spectral profiles of the DCSBDs were measured by OES to check for variations within the plasma, and high-resolution brightness profiles were captured. These optical measurements are compared with the energy flux data to better understand the relationship between the total power used, the area covered by the discharge, and the intensity of the plasma in the illuminated region.

Using a high-speed-camera, the short-term behavior of the filaments of the discharge could be compared with the average distribution of the plasma on the surface, as measured by long-exposure photographs.

Keywords: DCSBD; Plasma Jet; Passive Thermal Probe