高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (12): 2331.

• 研究论文 • 上一篇    下一篇

色噪声性质对一氧化氮还原反应体系随机共振的影响

龚玉兵1,2, 侯中怀1, 辛厚文1   

  1. 1. 中国科学技术大学化学物理系,合肥230026;
    2. 烟台师范学院物理系,烟台264025
  • 收稿日期:2004-12-27 出版日期:2005-12-24 发布日期:2005-12-24
  • 基金资助:

    国家自然科学基金(批准号:20173052,20203017,20433050)资助

Influence of Properties of Colored Noise on Stochastic Resonance in Pt(100)/NO+CO Reduction System

GONG Yu-Bing1,2, HOU Zhong-Huai1, XIN Hou-Wen1   

  1. 1. Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,China;
    2. Department of Physics,Yantai Teachers College,Yantai 264025,China
  • Received:2004-12-27 Online:2005-12-24 Published:2005-12-24

PDF (PC)

被引次数

11

摘要： 研究了一定温度条件下和NO气体偏压pNO处在超临界Hopf分岔点附近时,Pt(100)/NO+CO表面催化还原反应体系被色噪声调制后的动力学行为.通过计算机模拟,观察到了色噪声诱导的反应振荡和随机共振现象.探讨了色噪声强度和相关时间对随机共振行为的影响,得到一些新的结果.

关键词: 色噪声；随机共振;Pt(100)/NO+CO反应体系;超临界Hopf分岔, 色噪声, 随机共振, Pt(100)/NO+CO反应体系, 超临界Hopf分岔

Abstract: Under the conditions of constant temperature and the value of NO partial pressure pNO which is tuned close to Hopf bifurcation point,the dynamics of Pt(100)/NO+CO system modulated by colored noise is studied.The colored noise-induced oscillations and the stochastic resonance are observed by using numerical simulations.The influences of intensity and correlation time of colored noise on the stochastic resonance are discussed.A novel result is found that the noise intensity for the occurrence of stochastic resonance initially increases and then decreases with increasing the fixed correlation time.

Key words: Colored noise; Stochastic resonance; Pt(100)/NO+CO reaction system; Supercritical Hopf bifurcation, Colored noise, Stochastic resonance, Pt(100)/NO+CO reaction system, Supercritical Hopf bifurcation

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