H/D+Cl光缔合过程中的同位素效应

Isotope effect on the photoassociation process of H/D+Cl

为了分析同位素效应对光缔合动力学的影响,通过求解含时Schr9dinger方程,研究了HCl以及DCl体系在基电子态上的光缔合动力学过程。针对这2个体系,通过优化激光参数,计算了系统在不同初始碰撞动量条件下到目标振动态v=17的最大光缔合几率。研究发现:系统光缔合几率的大小和初始连续态与目标态的耦合积分存在联系,两者随初始碰撞能的变化趋势一致;HCl系统的光缔合几率明显高于DCl系统,并且前者的光缔合过程伴随多光子跃迁效应。

To analyze the influence of the isotopic effect on photoassociation dynamics？ the photoassociation dynamics for the HC1 and DC1 systems are investigated by solving the time-dependent Schrodinger equation For the two systems, by optimizing laser parameters, the maximal photoassociation probabilities to the target state （v= 17 vibrational state） are obtained for different ini-tial-collision-momentum conditions. The photoassociation probability is found to be related with the overlap integral between the initial continuum and the target state. The two variables present the same trends with respect to the initial collision momentum. The photoassociation probability for the HC1 system is much greater than that for the DC1 system, and multi-photon transition process occurs in the former system.