本文利用普适的QCT方法,在相对碰撞能E_(col)=0.5,2.5,5.0,7.5,10.0,15.0,20.0,25.0kcal/mol下研究了Na_2(X~1∑_g~+)+Cl(3~2p)反应散射,也考查了振、转激发对反应性的影响.计算结果表明,在低碰撞能下,反应以直接反应为主;在高碰撞能下,反应经过一个过渡态。反应截面随碰撞能增加而减小。反应物振动激发对反应有一定影响,但转动激发对反应影响不够明显. In this paper, the universal QCT method was used to study the effect of Na_2 (X ~ 1Σ_g ~ +) + Cl on the relative collision energy E col (= 0.5,2.5,5.0,7.5,10.0,15.0,20.0,25.0 kcal / mol) (3 ~ 2p), and the effects of vibration and excitation on the reactivity were also investigated.The results show that the reaction is dominated by the direct reaction at low collision energy, and the transition through a transition state at high collision energy. The cross section of the reaction decreases as the collision energy increases. The vibration of the reactant has a certain influence on the reaction, but the effect of the rotation on the reaction is not obvious.