摘要
本文报导了一个简单的动力学模型。模型假设在A+BC反应中,反应前后C原子的速度不变,且反应时BC间有排斥能的瞬时释放。利用此模型成功地解释了Ba与N_2O、碱土金属与卤代甲烷的反应,并提出CPR模型只是此模型的一个特例。
A simple dynamical model has been reported in this paper. It has been assumed that the ve- locity of atom C is alike before and after reaction, and the repulsive energy releases impulsively when B-C bond ruptures. The vibrational and rotational energies of the product AB can be described as a function of the impact parameter b and the relative translational energy E of the reagents. The vibrational and rotational distributions of the product AB can be computed in the (b , E) phase space according to this model. It has been examined that the maximum im- pact parameter b_(max), the mass factor cos^2β, the repulsive energy R, and the average relative translational energy E_T influence on the vibrational distribution of the product AB. This model has explained successfully the reactions of Ba and N_2O, alkaline atoms and methyl halide. It has been showed that this model is the same as CPR model when the mass factor cos^2β equals to ze- ro.
