摘要
依据碰撞络合物模型,用最大作用势和取向平均两种方法计算了CH(A^2Δ)自由基被23种分子猝灭的猝灭截面及其与温度的关系。讨论了用碰撞络合物模型计算电子激发态粒子猝灭截面的适用范围。低温区,在碰撞络合物形成过程中无位垒(除离心位垒外)的体系可以得到较满意的结果,否则不能正确预言猝灭截面与温度的关系;但在大的温度区间内,特别在高温区,适用性会变好。
According to the collisional complex model, the calculations of quenching cross sections of CH(A^2Δ) radical by 23 molecules are presented by using most favorable orientation and orientational average methods. In addition, the range of application of the collisional complex model for calculating quenching cross sections of electronically excited species is discussed. In low temperature region, if there is no barrier other than the centrifugal, the calculated result is favorabale; otherwise, the dependence of cross section on temperature cannot be correctly predicted. In the wide temperature range, particularly in the high temperature region, the calculation is somewhat more applicable.
