Experimental study of the dynamics of spiral pairs in light-sensitive Belousov-Zhabotinskii media using an open-gel reactor

被引：53

作者：

Brandtstädter, H ^{[1
]}

Braune, M ^{[1
]}

Schebesch, I ^{[1
]}

Engel, H ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 323卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(00)00486-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Within an open-gel reactor we study the interaction of spiral waves in a light-sensitive Belousov-Zhabotinskii (BZ) medium by varying the applied light intensity which controls the local excitation threshold. A small, initially symmetric pair of counter-rotating spiral waves after several rotation periods undergoes a symmetry-breaking instability. For a spiral wave interacting virtually with its mirror image on the opposite side of a plane boundary impermeable to diffusion, we measure the drift along the boundary as a function of the applied light intensity. The experimental data are compared with the results of numerical simulations obtained from a modified Oregonator model. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：145 / 154

页数：10

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