Europhys. Lett.
Volume 75, Number 6, September 2006
Page(s) 868 - 874
Section General
Published online 23 August 2006
Europhys. Lett., 75 (6), pp. 868-874 (2006)
DOI: 10.1209/epl/i2006-10215-5

Defect-mediated turbulence in a catalytic surface reaction

C. Beta, A. S. Mikhailov, H. H. Rotermund and G. Ertl

Fritz-Haber-Institut der Max-Planck-Gesellschaft - Faradayweg 4-6 14195 Berlin, Germany

received 16 March 2006; accepted in final form 28 July 2006
published online 23 August 2006

We analyze the statistical properties of topological defects in an experimental reaction-diffusion system -the catalytic CO oxidation on Pt(110). Based on the gain and loss rates of defects, a probabilistic description of defect-mediated turbulence in this system is derived. We observe deviations from theoretical predictions for the statistics of topological defects that can be explained by the presence of short-range correlations between defects and underline the importance of correlations for defect dynamics in such systems.

05.45.-a - Nonlinear dynamics and chaos.
82.40.Np - Temporal and spatial patterns in surface reactions.
82.40.Qt - Complex chemical systems.

© EDP Sciences 2006