München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 18: Postersitzung

P 18.21: Poster

Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax

Setup and Calibration of a Rotating Compensator Polarimeter for the Particle Size Diagnostic of Nanodusty Plasmas — •Tabea Gleiter, Andreas Petersen, and Franko Greiner — Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel

Polarimetry of nanoparticles is commonly known as Mie ellipsometry. In nanodusty plasmas Mie ellipsometers can be used for the in-situ diagnostic of the refractive index and the radius of the nanoparticles. The basic setup of an ellipsometer is quite simple, it uses the combination of a rotating quarter wave plate, a linear analyzer and a detector. However, the calibration and data analysis of the polarimeter is challenging. We present the design, calibration and data analysis of a simple system consisting of a hollow shaft stepper motor and a photomultiplier and discuss its advantages and limitations.