München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 2: Complex and Dusty Plasmas I

P 2.4: Vortrag

Montag, 18. März 2019, 12:15–12:30, HS 20

Size, density and charge analysis of Al2O3 nanoparticles in argon discharges — •Harald Krüger and André Melzer — Institute of Physics, University of Greifswald

Dusty plasmas with nanoparticles have attracted increased attention in the last few years. Beside the existing experimental setups with nanoparticles grown in the rf discharge, we present the insertion of industrial, nanoscaled Al2O3 dust with a gas jet injection setup.

The confined particles are being investigated in terms of size and density distribution by a Mie scattering and absorption spectroscopy setup.

Furthermore, theoretical calculations have shown a charge dependent shift in the infrared spectral range of the particles. Existing experiments have already given a proof of concept, but did not show a charge variation due to a low resolution of the FTIR spectrometer yet. Therefore, new experiments with a higher resolution have been carried out and first results will be presented.

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