Berlin 2014 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 20: Poster Session - Dusty Plasmas
P 20.13: Poster
Mittwoch, 19. März 2014, 16:30–18:30, SPA Foyer
Investigation of Nanoparticle Growth in a Dusty Acetylene Plasma — •Alexander Hinz1, Erik v. Wahl2, Maik Fröhlich3, Thomas Strunskus1, and Holger Kersten2 — 1Institute for Materials Science, CAU Kiel, Germany — 2Institute of Experimental and Applied Physics, CAU Kiel, Germany — 3Leibniz Institute for Plasma Science and Technology Greifswald, Germany
Dusty plasmas are not only of fundamental interest but also of practical importance. Formation in plasmas is seen as a new route to prepare nanoparticles of well defined size and composition. While the particle formation in silane plasmas is well investigated it is less understood in acetylene plasmas. In particular the early stages of the particle growth are not well investigated since they are experimentally inaccessible by standard methods like Mie-Scattering. In order to get a better insight in the early stages of the particle growth a novel collection method based on neutral drag was tested. Size-distributions of the nanoparticles at different points of the growth cycle were determined exsitu and correlated with in-situ measurement of the bias voltage of the capacitively-coupled discharge plasma. Additionally, preliminary experiments employing grazing-incidence small angle X-ray scattering (GISAXS) were performed ex-situ on the collected carbonaceous nanoparticles.