SPIRALS AND CHEMICAL TURBULENCE IN AN EXCITABLE SURFACE-REACTION

Authors
BAR M GOTTSCHALK N HILDEBRAND M EISWIRTH M
Citation
M. Bar et al., SPIRALS AND CHEMICAL TURBULENCE IN AN EXCITABLE SURFACE-REACTION, Physica. A, 213(1-2), 1995, pp. 173-180
Citations number
13
Categorie Soggetti
Physics
Journal title
Physica. A → ACNP
ISSN journal
03784371
Volume
213
Issue
1-2
Year of publication
1995
Pages
173 - 180
Database
ISI
SICI code
0378-4371(1995)213:1-2<173:SACTIA>2.0.ZU;2-Q
Abstract
Rigidly rotating spiral waves under constant external parameters, drif ting spirals under the influence of a periodic perturbation as well as turbulent patterns have been observed in the isothermal CO oxidation on a Pt(1 1 0) single crystal surface. A simple reaction-diffusion mod el can reproduce these findings. It is pointed out that the spiral res onances depend on the symmetry of the surface. The mechanism leading t o turbulence is briefly described.