中国物理B ›› 2010, Vol. 19 ›› Issue (11): 110513-110515.doi: 10.1088/1674-1056/19/11/110513

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Bending localization of nitrous oxide under anharmonicity and Fermi coupling: the dynamical potential approach

房超1, 张弛2, 吴国祯2   

  1. (1)Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China; (2)Molecular and Nano Sciences Laboratory, Department of Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2010-03-22 修回日期:2010-05-28 出版日期:2010-11-15 发布日期:2010-11-15
  • 基金资助:
    Project supported by the Research Foundation from Ministry of Education of China (Grant No 306020), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No 20060003050), and the National Natural Science Foundation of China (Grant No 20773073).

Bending localization of nitrous oxide under anharmonicity and Fermi coupling: the dynamical potential approach

Zhang Chi(张弛)a), Fang Chao(房超)b) and Wu Guo-Zhen(吴国祯)a)†   

  1. a Molecular and Nano Sciences Laboratory, Department of Physics, Tsinghua University, Beijing 100084, China; b Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
  • Received:2010-03-22 Revised:2010-05-28 Online:2010-11-15 Published:2010-11-15
  • Supported by:
    Project supported by the Research Foundation from Ministry of Education of China (Grant No 306020), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No 20060003050), and the National Natural Science Foundation of China (Grant No 20773073).

摘要: This paper studies the vibrational nonlinear dynamics of nitrous oxide with Fermi coupling between the symmetric stretching and bending coordinates by classical dynamical potential approach. This is a global approach in the sense that the overall dynamics is evidenced by the classical nonlinear variables such as the fixed points and the focus are on a set of levels instead of individual ones. The dynamics of nitrous oxide is demonstrated to be not so much dependent on the excitation energy. Moreover, the localized bending mode is shown to be ubiquitous in all the energy range studied.

Abstract: This paper studies the vibrational nonlinear dynamics of nitrous oxide with Fermi coupling between the symmetric stretching and bending coordinates by classical dynamical potential approach. This is a global approach in the sense that the overall dynamics is evidenced by the classical nonlinear variables such as the fixed points and the focus are on a set of levels instead of individual ones. The dynamics of nitrous oxide is demonstrated to be not so much dependent on the excitation energy. Moreover, the localized bending mode is shown to be ubiquitous in all the energy range studied.

Key words: nitrous oxide, dynamical potential, Fermi coupling, bending localization

中图分类号:  (Calculations and mathematical techniques in atomic and molecular physics)

  • 31.15.-p
33.15.Mt (Rotation, vibration, and vibration-rotation constants) 33.20.Tp (Vibrational analysis)