各向异性对分子-分子散射截面的光辉结构的影响
Effect of the anisotropy on the glory structure of molecule-molecule scattering cross sections
摘要：
利用最近的从头计算势能面计算了O $_2(^3Σ_g^-)$ -O $_2(^3Σ_g^-)$的总（弹性+旋转非弹性）积分截面.采样速度范围允许我们在分子束实验中观察到的荣耀干涉图案进行彻底的比较。计算的截面比实测的小10%左右，然而，在速度位置的荣耀极值实现了显着的协议。通过与减少或消除相互作用的各向异性的模型进行比较，发现荣耀图案对各向异性非常敏感，特别是荣耀极值的位置。
英文摘要：
Total (elastic + rotationally inelastic) integral cross sections are computed for O$_2(^3Σ_g^-)$-O$_2(^3Σ_g^-)$ using a recent ab initio potential energy surface. The sampled velocity range allows us a thorough comparison of the glory interference pattern observed in molecular beam experiments. The computed cross sections are about 10% smaller than the measured ones, however, a remarkable agreement in the velocity positions of the glory extrema is achieved. By comparing with models where the anisotropy of the interaction is reduced or removed, it is found that the glory pattern is very sensitive to the anisotropy, especially the positions of the glory extrema.
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