München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 2: Complex and Dusty Plasmas I

P 2.1: Hauptvortrag

Montag, 18. März 2019, 11:15–11:45, HS 20

Diagnostics of nanodusty plasmas — •Franko Greiner and the SFB-TR24 Team — Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel

0mm In plasma technology reactive nanodusty plasmas are widely used. In contrast the basic physics of nanodusty plasmas is only little examined. Nanodusty plasmas can have a very high nanoparticle density and therefore a high degree of electron depletion, i.e., the Havnes parameter is high compared to unity. The diagnostic of nanodusty argon plasmas consisting of ions, electrons and nanoparticles is challenging. When it comes to reactive plasmas, the plasma chemistry plays a major rule and the diagnostic of the multi component plasma is even more challenging. Standard diagnostics like Langmuir probes disturb the plasma and coating of the probe obscures the I(U) characteristic. Optical emission spectroscopy and laser spectroscopy are difficult due to the light scattered or absorbed by the nanoparticles, especially under optical thick conditions.

During the last years we have developed new methods like I-Mie and DDW-D for the diagnostic of nanoparticles and nanodusty plasmas [1]. This talk presents an overview of the available methods and the new insight they give.

[1] F. Greiner et al, Eur. Phys. J. D (2018) 72: 81

https://doi.org/10.1140/epjd/e2017-80400-7