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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Stirring-controlled bifurcations in the 1,4-cyclohexanedione-bromate reaction
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Stirring-controlled bifurcations in the 1,4-cyclohexanedione-bromate reaction

机译：1,4-环己烷二酮-溴酸酯反应中搅拌控制的分叉

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摘要

We report the experimental observation that stirring in a closed 1,4-cyclohexanedione-bromate reaction can induce transitions not only between oscillatory and nonoscillatory states but also between simple and period-doubled oscillations. Notably, the transition from simple to complex oscillations occurs as a result of increasing stirring rate. When illumination was employed to characterize the importance of rnicrofluctuations of concentrations, the threshold stirring rate for inducing a bifurcation was found to increase proportionally to the intensity of the applied light. Numerical simulations with an existing model illustrate that the experimental phenomena could be qualitatively reproduced by considering effects of mixing on diffusion-limited radical reactions, namely, the disproportion reaction of hydroquinone radicals.
机译：我们报告的实验观察结果表明，在封闭的1,4-环己烷二酮-溴酸盐反应中搅拌不仅会引起振荡状态和非振荡状态之间的转换，而且还会引起简单周期和两倍周期的振荡之间的转换。明显地，由于增加的搅拌速率，发生了从简单振荡到复杂振荡的转变。当采用照明来表征浓度的电子波动的重要性时，发现引起分叉的阈值搅拌速率与所施加的光的强度成比例地增加。现有模型的数值模拟表明，通过考虑混合对扩散受限的自由基反应即对苯二酚自由基的歧化反应的影响，可以定性地再现实验现象。

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