State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, People's Republic of China.
Science. 2010 Mar 19;327(5972):1501-2. doi: 10.1126/science.1185694.
Partial wave resonances, quasi-bound resonance states with well-defined rotation in the transition state region of a chemical reaction, play a governing role in reaction dynamics but have eluded direct experimental characterization. Here, we report the observation of individual partial wave resolved resonances in the F + HD --> HF + D reaction by measuring the collision energy-dependent, angle- and state-resolved differential cross section with extremely high resolution, providing a spectroscopic probe to the transition state of F + HD --> HF + D. The agreement of the data with the high-level theoretical calculations confirms the sensitivity of this probe to the subtle quantum mechanical factors guiding this benchmark reaction.
部分波共振，准束缚共振态，在化学反应的过渡态区域具有明确的旋转，在反应动力学中起着主导作用，但一直难以直接实验表征。在这里，我们通过以极高的分辨率测量碰撞能依赖的、角度分辨和态分辨的微分截面，报告了在 F + HD --> HF + D 反应中单个部分波分辨共振的观测，为 F + HD --> HF + D 的过渡态提供了光谱探针。数据与高精度理论计算的一致性证实了这种探针对指导这一基准反应的微妙量子力学因素的敏感性。
