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Sha等在静态池实验中观察到了转动能量转移中的碰撞量子干涉,并且计算了决定跃迁散射截面的积分干涉角(J.Chem.Phys.,1995,102:2772).由于积分干涉角是微分干涉角的平均效应,为了得到更精确的信息,进行了分子束实验.作者文运用含时微扰的一级波恩近似理论,提出了衡量干涉程度的1П态双原子分子中关于Λ量子干涉的微分干涉角.利用各向异性相互作用势计算了其干涉角.得到分子束实验中微分干涉角随实验参数,包括实验温度、碰撞伴、作用距离和转动量子数变化的关系.并且讨论了影响干涉角的各种参数.此理论模型对理解和进行分子束实验是非常重要的.
Sha et al. Observed collision quantum interference in rotational energy transfer in a static pool experiment and calculated the integral interference angle that determines the transition scattering cross section (J. Chem. Phys., 1995, 102: 2772). Since the integral interference angle is a derivative In order to obtain more accurate information, molecular beam experiments are carried out. The authors propose a first-order Bonn approximation theory with time-dependent perturbation and propose a new method to estimate Λ quantum interference in 1П-state diatomic molecules that measure the degree of interference Differential interference angle.The interference angle was calculated using the anisotropic potential and the differential interference angle in the molecular beam experiment was obtained with the experimental parameters including the relationship between experimental temperature, collider, action distance and rotational quantum number, Various parameters of the interference angle.This theoretical model is very important for understanding and conducting molecular beam experiments.