Bochum 2015 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 25: Low Temperature Plasmas III

P 25.7: Vortrag

Donnerstag, 5. März 2015, 12:10–12:25, HZO 30

Transport Phenomena in Plasma Jets interacting with Liquids — •Stephan Reuter, Ansgar Schmidt-Bleker, Sylvain Iseni, Helena Jablonowski, Jörn Winter, Malte Hammer, Mario Dünnbier, and Klaus-Dieter Weltmann — INP Greifswald, Felix-Hausdorff Str. 2, 17489 Greifswald

Argon plasma jets at atmospheric pressure usually are filamented - despite the fact that they might appear homogeneous to the eye as homogeneous plasma plume. In the present work, imaging during one excitation period reveals the streamer like structure of the plasma effluent. Several subsequent images reveal that the streamer path is changing with the flow field. Former measurements comparing these images to OH-planar laser induced fluorescence measurements show that the streamer path is coinciding with ambient impurities. A study of the generation and interaction of plasma with ambient surroundings was pre-sented and the resulting effect and generation pathways of reactive species are shown. Plasma reactive species composition can be tailored in the gas phase as well as in the liquid phase. Transport and generation mechanisms have to be studied in greater detail. For application, this approach can be used to study and decorrelate the effect of respective reactive species groups. Acknowledgement: funding by the BMBF (03Z2DN12) for the ZIK plasmatis is gratefully acknowledged