中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2078-2084.doi: 10.1088/1674-1056/17/6/023

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The differential interference angle in collisional quantum interference on rotational energy transfer

王伟丽1, 陈跃辉1, 唐丹1, 马凤才2, 苗刚3   

  1. (1)Department of Physics, College of Science, Liaoning Technical University, Huludao 125105, China; (2)Faculty of Physics, Liaoning University, Shenyang 110036, China; (3)School of Physics and Mechanical and Electrical, Inner Mongolia University For the Nationalities, Tongliao 028043, China
  • 收稿日期:2007-09-27 修回日期:2007-11-13 出版日期:2008-06-20 发布日期:2008-06-20
  • 基金资助:
    Project supported by the Research Foundation of Department of Education of Liaoning Province (Grant No 20060347) and the NNSFC (Grant No 10374040).

The differential interference angle in collisional quantum interference on rotational energy transfer

Wang Wei-Li(王伟丽)a)†, Miao Gang(苗刚)b), Chen Yue-Hui(陈跃辉)a), Tang Dan(唐丹)a), and Ma Feng-Cai(马凤才)c)   

  1. a Department of Physics, College of Science, Liaoning Technical University, Huludao 125105, China; b School of Physics and Mechanical and Electrical, Inner Mongolia University For the Nationalities, Tongliao 028043, China; c Faculty of Physics, Liaoning University, Shenyang 110036, China
  • Received:2007-09-27 Revised:2007-11-13 Online:2008-06-20 Published:2008-06-20
  • Supported by:
    Project supported by the Research Foundation of Department of Education of Liaoning Province (Grant No 20060347) and the NNSFC (Grant No 10374040).

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摘要： Collisional quantum interference (CQI) in the intramolecular rotational energy transfer was observed in experiment by Sha and co-workers.$^{[1]}$ The interference angle, which measuring the degree of the coherence, were measured in the experiment of the static cell. Based on the first Born approximation of time dependent perturbation theory, taking into accounts the anisotropic Lennard-Jones interaction potentials, this paper describes the theoretical model of CQI in intramolecular rotational energy transfer in an atom--diatom collision system. In the model, the differential interference angle for the experiment of the molecular beam is calculated, the changing tendencies of the differential interference angle with the impact parameter and collision partners are obtained. This theoretical model is important for understanding or performing this kind of experiments.

关键词: rotational energy transfer, differential interference angle, collision parameter

Abstract: Collisional quantum interference (CQI) in the intramolecular rotational energy transfer was observed in experiment by Sha and co-workers.$^{[1]}$ The interference angle, which measuring the degree of the coherence, were measured in the experiment of the static cell. Based on the first Born approximation of time dependent perturbation theory, taking into accounts the anisotropic Lennard-Jones interaction potentials, this paper describes the theoretical model of CQI in intramolecular rotational energy transfer in an atom--diatom collision system. In the model, the differential interference angle for the experiment of the molecular beam is calculated, the changing tendencies of the differential interference angle with the impact parameter and collision partners are obtained. This theoretical model is important for understanding or performing this kind of experiments.

Key words: rotational energy transfer, differential interference angle, collision parameter

中图分类号:  (Rotational and vibrational energy transfer)

  • 34.50.Ez
33.15.Hp (Barrier heights (internal rotation, inversion, rotational isomerism, conformational dynamics)) 34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))