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P: Fachverband Plasmaphysik

P 17: Atmospheric Pressure Plasmas - Poster

P 17.6: Poster

Mittwoch, 7. März 2018, 16:15–18:15, Zelt Ost

Spatial Electron Temperature and Density Measurement of a Plasma Window Arc Discharge — •Andre Michel, Bernhard Bohlender, Joachim Jacoby, and Marcus Iberler — Institut für Angewandte Physik, Goethe Universität Frankfurt

Optical emission spectroscopy is used for measurements of the free electron density and temperature of a wall stabilized arc discharge inside a newly developed plasma window at the Institute of Applied Physics at Goethe University Frankfurt. The plasma window provides a membrane free beam transmission between two different pressure levels on short length scales, offering advantages over conventional atmospheric to low-pressure interfaces. Due to the different pressure levels, plasma parameters are expected to vary alongside the arc discharge resulting in electron density and temperature gradients. For quantitative estimation radial optical emission spectroscopy measurements were carried out at different axial positions of the discharge. First results of the plasma parameters are presented, depending on the arc current and pressures inside the plasma window.