TEMPERATURE-GRADIENTS TRAVELING WITH CHEMICAL WAVES

Authors
BOCKMANN M HESS B MULLER SC
Citation
M. Bockmann et al., TEMPERATURE-GRADIENTS TRAVELING WITH CHEMICAL WAVES, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 53(5), 1996, pp. 5498-5501
Citations number
24
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
53
Issue
5
Year of publication
1996
Part
B
Pages
5498 - 5501
Database
ISI
SICI code
1063-651X(1996)53:5<5498:TTWCW>2.0.ZU;2-L
Abstract
Local thermal inhomogeneities traveling with oxidation wave fronts are measured in an excitable liquid layer of Belousov-Zhabotinsky reagent . Measurements are carried out with an infrared thermopile detector an d a pyroelectric film. An exothermic reaction occurring in these excit ation fronts generates a local temperature rise of 50 mK. This result allows one to exclude that temperature changes act constructively in t he mechanism of convection processes induced by chemical waves and yie lds a clear indication that the driving forces have to be produced by local concentration changes alone.