Hou Zhonghuai, Rao Ting, Xin Houwen
Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
J Chem Phys. 2005 Apr 1;122(13):134708. doi: 10.1063/1.1874933.
We have studied the influence of internal noise on the reaction rate oscillation during carbon-monoxide oxidation on single crystal platinum surfaces using chemical Langevin equations. Considering that the surface is divided into small well-mixed cells, we have focused on the dynamic behavior inside a single cell. Internal noise can induce rate oscillations and the performance of the stochastic rate oscillations shows double maxima with the variation of the internal noise intensity, demonstrating the occurrence of internal noise coherent biresonance. The relationship between such a phenomenon with the deterministic bifurcation features of the system is also discussed.
我们使用化学朗之万方程研究了内部噪声对单晶铂表面一氧化碳氧化过程中反应速率振荡的影响。考虑到表面被划分为小的充分混合的单元，我们重点关注单个单元内部的动力学行为。内部噪声可引发速率振荡，并且随机速率振荡的性能随内部噪声强度的变化呈现出双最大值，这表明出现了内部噪声相干双共振。我们还讨论了这种现象与系统确定性分岔特征之间的关系。
