Mainz 2022 – scientific programme
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P: Fachverband Plasmaphysik
P 9: Poster I
P 9.43: Poster
Tuesday, March 29, 2022, 16:00–17:30, P
OES characterization of the microwave plasma torch in different configurations — •Christian Karl Kiefer1, Ante Hecimovic1, Arne Meindl1, David Rauner2, and Ursel Fantz1,2 — 1Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany — 2University of Augsburg, 86159 Augsburg, Germany
The microwave plasma torch, operated at under-pressure and atmospheric pressure, has already been tested for a wide range of applications from gas conversion over the decomposition of VOC in exhaust gases to plasma spraying. For the application of CO2 conversion, axial scans of the rotational and vibrational temperature of the plasma were performed for a nozzle configuration (mixing the hot and cold gas as it exits the resonator) and a quencher configuration (allowing to admix additional cold gas into the effluent) via the analysis of the C2 Swan emission spectrum. To further characterize the microwave plasma torch at atmospheric pressure via optical emission spectroscopy, spectra from a variety of different pure gases and gas mixtures were acquired and specific features were analyzed. Feasibility studies for the determination of different plasma parameters were performed.