SPK势能面上Cl和H2反应的量子动力学计算

给出了在ＳＰＫ势能面上应用广义牛顿变分法（ＧＮＶＰ）和振幅密度衡量法（ＭＭＡＤ）对于反应系统Ｃｌ＋Ｈ２→ＨＣｌ＋Ｈ态－态之间反应几率的三维量子力学计算。总反应能量从９ｋｃａｌ．ｍｏｌ＾－１至１６ｋｃａｌ．ｍｏｌ＾－１。对于两种方法的计算结果进行了比较。为了同超球谐密耦合方法结果进行比较，还对总反应能量１９ｋｃａｌ．ｍｏｌ＾－１的情况进行了计算和分析。

Quantum Dynamics Calculations in Reaction of Cl with H_2 on SPK Potential Energy Surface

Accurate three-dimensional quantum dynamics calculations of state-to-state reactive probabilities for reaction Cl+H2→HCl+H2 for J=0 are carried out on the SPK potential energy surface based on both of the generalized Newton variational principle (GNVP) and the method of moment for amplitude density (MMAD) over a total reaction energy range from 9 to 16 kcal•mol-1. The results of calculations are compared between variational GNVP and nonvariational MMAD. An additional calculation is performed on total reaction energy at 19 kcal•mol-1. A simple comparison between SPK and GQQ surfaces well as to the result from hyperspherical close-coupling calculations is also presented.