摘要
本文用激光诱导荧光方法与分子束技术相结合,在较宽的波段范围内详细研究了F+C_2F_3I→IF+C_2F_5的态-态反应动力学过程。由光谱分析得到IF分子电子基态初生振动态布居和态-态反应速率常数,确定了反应机构。还发现了双模转动分布,首次测得了总反应截面。在考虑零点振动能后提出了一个速率常数的统计表达式,与实验结果符合很好。
By using the combination of laser induced fluorescence and crossed molecular beam meth- od, the processes of the state to state reaction dynamics of the reaction F + C_2F_5I→ IF + C_2F_5 were studied in detail in a wide wavelength region. The relative initial vibrational dis- tribution of IF ground electronic state and the detail reaction rate constants were obtained from spectral analysis. The reaction mechanism was settled. A bimodel rotational distribution was discovered and the total rate constant was measured for the first time. A statistical expression of the late constant was raised, in which the zero point energy was considered, and the calculated results were in a good agreement with the experimental.
