转动传能中的量子干涉:干涉角和相对速度的关系(英文)  

Collisional Quantum Interference on Rotational Energy Transfer: Relationship between Interference Angle and Relative Velocity

作　　者：孙萌涛[1] 田红梅[1] 沙国河[1] 

机构地区：[1]中国科学院大连化学物理研究所分子反应动力学国家重点实验室,大连116023

出　　处：《Chinese Journal of Chemical Physics》2002年第3期175-180,共6页化学物理学报（英文）

基　　金：Thisworkwassupported byNNSFC(2 99730 4 5 );NKBRSF

摘　　要：考虑一级含时波恩近似和长程相互作用势 ,Sun提出了转动传能中的量子干涉模型 .在静态池中COA1Π～e3Σ- 和He碰撞的实验已经成功模拟 .为了从实验中直接获得碰撞速度和干涉角的关系 ,Sha提出了利用分子束和离子速度成像技术的实验 .作为理论研究干涉角和碰撞速度的关系 ,计算了不同速度下的干涉角 ,同时获得了变化的趋势 .对在分子束条件下 (通过控制碰撞速度来控制干涉角 )A dynamic model of collisional quantum interference (CQI) on rotational energy transfer in an atom-diatom system has been described by Sun et al., based on the first order Born approximation of time dependent perturbation theory and long-range interaction potential. The experiment CO A (1)Pi similar to e (3)Sigma(-) collision with He in a static cell has been simulated succesfully. successfully. To obtain directly the relationship between interference angle and relative velocity from experiment, an experiment is proposed by Sha, using molecular beam and velocity imaging technology. As a theoretical study of the relationship between interference angle and relative velocity, the interference angles are calculated with different relative velocities, and the changing tendency is obtained. It is revelatory for the molecular beam experiment to measure directly the interference angles by controlling the relative velocities.

关 键 词：转动传能 相对速度 磁撞量子干涉 干涉角 分子反应动力学 一氧化碳 

分 类 号：O413.1[理学—理论物理]