SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 17: Complex Plasmas and Dusty Plasmas/Codes and Modeling II

P 17.2: Vortrag

Donnerstag, 23. März 2023, 16:00–16:15, CHE/0089

Ex situ measurement of dust size distribution of nanoparticle growth process and comparison with in situ measurements — •Andreas Petersen, Jakob Wötzel, and Franko Greiner — Institute of Experimental and Applied Physics, Kiel, Germany

We present the result of a size distribution analysis for plasma grown dust particles in their accretion phase. A multi-sample extraction process was used to prepare samples for analysis with SEM (ex situ measurement). This allowed for eight consecutive samples, without terminating the discharge. We find that a normal distribution is an adequate description of the particle distribution for the whole growth process. It is noteworthy, that the standard deviation of the distribution increases approximately linearly with average size. We also compare these results with those from a light scatter analysis, which was performed simultaneously and can determine average size and refractive index without opening the discharge chamber (in situ measurement).