Interrupted separatrix excitability in a chemical system

William D. McCormick, Zoltan Noszticzius, Harry L. Swinney

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Models of excitability fall into two broad categories: one with a sharp threshold, the other with a narrow but finite threshold region. In an attempt to clarify the notion, we have studied the application of two models of excitability to experiments on a variant of the Belousov-Zhabotinskii reaction in a well-stirred reactor. An interrupted separatrix model, which has a sharp threshold, is found to describe our experimental results better than a simple nullcline model, which has a finite threshold region.

Original languageEnglish
Pages (from-to)2159-2167
Number of pages9
JournalThe Journal of Chemical Physics
Issue number3
Publication statusPublished - Jan 1 1991


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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