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P: Fachverband Plasmaphysik

P 27: Complex Plasmas and Dusty Plasmas II

P 27.6: Vortrag

Donnerstag, 8. März 2018, 15:25–15:40, KI 1.174

Two dimensional dust density wave diagnostics (DDW-D) of nanoparticles in an argon radio frequency discharge — •Oguz Han Asnaz, Benjamin Tadsen, Franko Greiner, and Alexander Piel — Institute of Experimental and Applied Physics, Kiel University, Germany

The wavevector and wave frequency of self-excited dust density waves (DDW) in a nanodusty plasma can be used as a tool for plasma diagnostics, giving spatially resolved information about ion and electron densities, dust charge and the plasma potential. The presented approach expands upon the analysis presented in Ref. 1 and examines the complete two-dimensional cross-section of the wave field. This approach will be used to investigate changes in the nanodusty plasma parameters, when the reactive gas for growing nanoparticles is changed from acetylene to silane. Comparing the resulting wave fields for a-C:H and a-Si:H particles provides insight into the influence of the particle surface properties on the plasma parameters.

[1] B. Tadsen et al., Phys. Plasmas 22, 113701 (2015)