Dresden 2006 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 14: Statistical Physics far from Thermal Eqilibrium
DY 14.5: Vortrag
Montag, 27. März 2006, 15:45–16:00, H\"UL 186
Quantitative description of self-organised patterns in ac gas-discharge — •Hans-Georg Purwins1, Lars Stollenwerk1, Shalva Amiranashvili1, and Jean-Pierre Boeuf2 — 1Institut für Angewandte Physik, Corrensstaße 2/4, 58239 Münster — 2CPAT, 118 route de Narbonne, 31 062 Toulouse Cedex, France
In this work we report on the experimental observation of the evolution of a filamentary pattern in a planar dielectric barrier gas-discharge system. The experimental results are described theoretically in terms of three variables: the electron and ion charge carrier concentration and the electric field. The corresponding set of equations consists of two equations of drift-diffusion type and the Poisson equation. This set of equations is solved numerically. Parameters and boundary conditions are taken from experiment. We find quantitative agreement between experiment and theory. This is the first time that a self-organised pattern in a planar gas-discharge system can be described theoretically in a quantitative manner.