中国物理B ›› 2013, Vol. 22 ›› Issue (6): 63401-063401.doi: 10.1088/1674-1056/22/6/063401
• ATOMIC AND MOLECULAR PHYSICS • 上一篇 下一篇
赵丹a b, 楚天舒b c, 郝策a
Zhao Dan (赵丹)a b, Chu Tian-Shu (楚天舒)b c, Hao Ce (郝策)a
摘要: The stereodynamic properties of the F + HO (v, j) reaction are explored by quasi-classical trajectory (QCT) calculations performed on the 1A' and 3A' potential energy surfaces (PESs). Based on the polarization-dependent differential cross sections (PDDCSs) and the angular distributions of the product angular momentum with the reactant at different values of initial v or j, the results show that the product scattering and product polarization have strong links with initial vibrational-rotational numbers of v and j. The significant manifestation of the normal DCSs is that the forward scattering gradually becomes predominant with the initial vibrational excitation increasing, and the scattering angle of the HF product taking place on the 3A' potential energy surface is found to be more sensitive to the initial value of v. The product orientation and alignment are strongly dependent on the initial rovibrational excitation effect. With enhancement in the initial rovibrational excitation effect, there is an overall decrease in the product orientation as well as in the product alignment either perpendicular to the reagent relative velocity vector k or along the direction of the y axis, for which the initial rotational excitation effect is much more noticeable than the vibrational excitation effect. Moreover, the initial rovibrational excitation effect on the product polarization is more pronounced for the 3A' potential energy surface than for the 1A' potential energy surface.
中图分类号: (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))