基于新的LEPS势能面,初始碰撞能为12kcal/mol的条件下,用准经典轨线法研究了Cl+H2→HCl+H的反应。理论计算了广义极化微分反应截面PDDCS、k-j′两矢量相关的p(rθ)分布、k-k′-j′三矢量相关的p(φr)分布以及表示产物转动角动量空间分布的p(θr,φr)。结果与有关实验和理论符合得很好,再现了反应过程和生成物的分布特点。 Based on the new LEPS potential energy surface, the reaction of Cl + H2 → HCl + H was studied by the quasi-classical trajectory method under the initial collision energy of 12 kcal / mol. The p (rθ) distributions of the two vectors of PDDCS and kj ’, the p (φr) distribution of the kk’-j’ three vectors and the p (θr, φr). The results are in good agreement with the relevant experiments and theories, and the distribution of reaction processes and products is reproduced.