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化学反应共振态是长期以来备受关注的化学反应动力学研究课题,对于理解基元化学反应的机理有着重要的意义.本文介绍了最近我们在这一研究方向的重大进展.通过对F+H2化学反应的全量子态分辨的分子束反应散射实验研究,观测到了F+H2中反应中明显的反应共振现象.通过高精度的全量子散射动力学研究,发现这一共振现象是由两个动力学共振态所引起的,而且这两个动力学共振态之间在前向散射有明显的量子干涉效应.这项研究工作使得对这一重要基元反应中的化学反应共振态的研究向前迈进了一大步.此外,还进一步在实验和理论上研究了氢分子转动对动力学共振的影响,并且观测到了F+H2(j=1)反应的动力学共振现象.
The chemical resonance state has long been attracted much attention in the field of chemical reaction kinetics and is of great significance for the understanding of the mechanism of chemical reaction of elementary compounds.This paper introduces the recent significant progress in this research direction.Through the study of F + H2 The full quantum state reaction of molecular reaction by molecular beam scattering experiment, the reaction was observed F + H2 reaction resonance phenomenon by high-precision full quantum scattering dynamics study found that this resonance is caused by two dynamic , And the apparent quantum interference effect of the forward kinetic resonance between the two kinetic resonance states led to the study of the resonant state of the chemical reaction in this important elementary reaction In addition, we further studied experimentally and theoretically on the influence of hydrogen molecule rotation on the kinetic resonance, and observed the dynamic resonance phenomenon of F + H2 (j = 1) reaction.