| Autor: |
Araki, H., Beig, R., Ehlers, J., Frisch, U., Hepp, K., Jaffe, R. L., Kippenhahn, R., Weidenmüller, H. A., Wess, J., Zittartz, J., Begilböck, W., Parisi, Jürgen, Müller, Stefan C., Zimmermann, Walter, Brandtstädter, H., Braune, M., Engel, H. |
| Zdroj: |
Perspective Look at Nonlinear Media; 1998, p271-282, 12p |
| Abstrakt: |
Within a light-sensitive Belousov-Zhabotinskii medium we study the interaction of meandering spiral waves. Using an open gel-reactor we find experimental evidence that a small pair of spiral waves undergoes a symmetry-breaking instability, where one member of the spiral pair overwhelms its neighbor and pushes it to the periphery of the medium. To avoid this instability we consider the interaction of a spiral wave with its virtual mirror image close to a plane boundary impermeable to diffusion. The drift of this pseudo-bound state parallel to the boundary occurs on a time scale up to two orders of magnitude larger than the rotation period. The experimental data agree qualitatively with results of numerical simulations obtained within a modified kinematic approach. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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