Topic/Type: 1.5 Low-temperature, dusty and nano-plasmas, Poster

Study of low temperature plasma containing micron-sized dust particles by hybrid computer simulations

P. Bartos, J. Blazek, P. Spatenka

University of South Bohemia, Pedagogical Faculty, Ceske Budejovice, Czech Republic

This contribution deals with computational study of low-temperature argon plasma containnig small micron-sized solid dust particulates.

In the first section there are summarized numerical and computational approaches that are most frequently used in this area of research and the references on fundamental theoretical and experimental works are given.

Consequently, our developed hybrid model is described and results obtained by the calculations are presented. In the computer model there are considered the fundamental physical processes in plasma and on the surface of the particulate, like elastic scattering, excitation of neutrals, ionisation of atoms by impacting electron, the dependence of corresponding cross-sections on the energy of impacting particles, dependence of the sticking coefficient on the particle impact angle etc.

The results of calculations are presented and discussed in the last section. The dependence of the electric charge on the surface of the particulate on particulate diameter, plasma pressure, the placement of particulate in the sheath etc. is given. The magnitude of acting electric force in dependence on the particulate placement in the plasma sheath is discussed. Finally, theoretical results are compared with data given by experiments and they are discussed in detail.


Acknowledgements
Author P. Barto? thanks for the financial support to the grant project GAČR 202/09/P140. This research was partially supported by the grant project KAN101120701 and NANOPIN MSMT 1M0577.