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

作　　者：王伟丽 苗刚 陈跃辉 唐丹 马凤才 

机构地区：[1]Department of Physics, College of Science, Liaoning Technical University [2]School of Physics and Mechanical and Electrical, Inner Mongolia University For the Nationalities [3]Faculty of Physics, Liaoning University

出　　处：《Chinese Physics B》2008年第6期2078-2084,共7页中国物理B（英文版）

基　　金：Project supported by the Research Foundation of Department of Education of Liaoning Province (Grant No 20060347);the NNSFC (Grant No 10374040)

摘　　要：Collisional quantum interference （CQI） in the intramolecular rotational energy transfer was observed in experiment by Sha and co-workers. 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.Collisional quantum interference （CQI） in the intramolecular rotational energy transfer was observed in experiment by Sha and co-workers. 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 

分 类 号：O431.2[机械工程—光学工程] O561[理学—光学]