摘要
利用通用型交叉分子束研究了氟原子与1，2-丁二烯的反应，观测到了C4H5F＋H反应通道，测量产物C4H5F在实验坐标下的角度分辨的飞行时间谱，获得了这个通道质心坐标下的产物角分布和动能分布，实验结果表明，相对于氟原子束方向，产物C4H5F主要是后向散射，同时也有大量的前向散射，这表明反应通道主要通过长寿命的络合物形成机理进行的，同时也伴有直接的双分子亲核取代反应（SN2）机理。
We have investigated the dynamics of the F＋C4H6 reaction using the universal crossed molecular beam method. The C4H5F＋H reaction channel was observed in this experiment. Angular resolved time-of-flight spectra have been measured for the C4H5F product. Prod- uct angular distributions as well as kinetic energy distributions were determined for this product channel. Experimental results show that the C4H5F product is largely backward scattered with considerable forward scattering signal, relative to the F atom beam direction. This suggests that the reaction channel mainly proceeds via a long-lived complex formation mechanism, with possible contribution from a direct SN2 type mechanism.
