APERIODICITY AND DETERMINISTIC CHAOS IN THE BELOUSOV-ZHABOTINSKY REACTION

Deterministic chaos in the Belousov-Zhabotinsky reaction is well-known to occur at low flow rates. 1-6 However, the source of aperiodicity in the high flow rate region has remained a controversial issue. We reproduced the aperiodicity found by Hudson 7,8 and, more recently, by Noszticzius et al. 9 under practically identical experimental conditions. We interpret the observed aperiodicity at high flow rates as nonchaotic on the basis of the 1-D maps and Renyi dimensions (calculated with the nearest neighbor method 11-13 from single value decomposition reconstructed 10 attractors), including the Hausdorff dimension. The observed aperiodicity at high flow rates is most probably a noisy time series of the 1(1)1(2) state and the adjoining Farey ordered states.