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P: Fachverband Plasmaphysik

P 5: Poster Session 1

P 5.36: Poster

Montag, 9. März 2020, 16:30–18:30, Empore Lichthof

A new longitudinal 1D extinction setup for density mea- surements of nanodusty clouds in low-pressure plasmas — •Alexander Schmitz, Andreas Petersen, Nils Rehbehn, Sebastian Groth, and Franko Greiner — Insitut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel

Clouds of nanometer-sized particles, grown from molecular precursors in reactive low-pressure plasmas, exhibit a wide range of unique characteristics and effects. Hence the detailed knowledge of dust properties is of central importance to understand these complex systems. Methods like computed tomography or 2D extinction measurements are powerful tools to determine the particle densities but come with the downside of usually being time-consuming and requiring full optical access to the system. This significantly limits the possibility of using different diagnostics simultaneously and one must rely on the reproducibility of the investigated phenomena.

Here, we present a new setup that combines 1D extinction measurements with a co-aligned video camera. This makes it possible to reconstruct the dust density profile of a cylindrical nanodust cloud, while only needing access along one optical axis. This leaves enough room for further simultaneous diagnostics. The advantages and drawbacks of the setup will be discussed.