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本文在束-气化学反应装置中,研究了Ba+Cl_2(Br_2)化学发光反应,观测了BaCl_2~*(BaBr_2~*)连续发射和Ba(~1P→~1S)辐射强度与反应物浓度的关系,并用OMA观测了BaCl_2~*(BaBr_2~*)的发光强度的空间分布。实验结果否定了生成BaCl_2~*的单次碰撞的各种设想,通过形成高振动激发的电子基态中间产物的二步反应机理,成功地解释了实验观察的各项结果,证明这个机理是可信的。
In this paper, the chemiluminescence reaction of Ba + Cl_2 (Br_2) was studied in a beam-gas chemical reaction apparatus. The effects of continuous emission of BaCl_2 ~ * (BaBr_2 ~ *) and Ba (~ 1P → ~ 1S) The spatial distribution of the luminescence intensity of BaCl_2 ~ * (BaBr_2 ~ *) was observed by OMA. The experimental results negate various assumptions on the single collision of BaCl_2 ~ * and successfully explain the experimental observations by forming a two-step reaction mechanism of high-vibration excited ground state intermediates, proving that this mechanism is credible of.