Regensburg 2004 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.16: Poster
Donnerstag, 11. März 2004, 16:00–18:00, Poster D
Dynamics and interaction of dissipative solitons — •Hendrik U. Bödeker1, Andreas W. Liehr1, Till D. Frank2, Rudolf Friedrich2, Ulf-Hendrik Hansen1, and Hans-Georg Purwins1 — 1Westfälische Wilhelms-Universität Münster, Institut für Angewandte Physik, Corrensstr. 2/4, 48149 Münster — 2Westfälische Wilhelms-Universität Münster, Institut für Theoretische Physik, Wilhelm-Klemm-Str. 9, 48149 Münster
We present new results concerning the investigation of the dynamics and the interaction of dissipative solitons occurring as current filaments in a planar DC gas-discharge system with high-ohmic barrier. The dissipative solitons exhibit interesting particle-like properties like generation and annihilation, scattering, and formation of molecules. Processes in which the number of solitons stays preserved can be understood by analyzing the dynamics using means of stochastic data analysis. In this way, both intrinsically standing and propagating solitons can be found, corresponding to Brownian and active Brownian particles [1]. In addition, a distance-dependant interaction law between mutually interacting dissipative solitons can be determined, quantitatively explaining the experimentally observed interaction phenomena. Generation and annihilation processes taking place on a short time scale can be observed using fast cameras, revealing different basic scenarios.
[1] H. U. Bödeker, M. C. Röttger, A. W. Liehr, T. D. Frank, R. Friedrich and H.-G. Purwins, Noise-covered drift bifurcation of dissipative solitons in a planar gas-discharge system, PRE 67 (2003) 056220.