Effects of the Reagent Rotational Excitation on the Stereodynamics of the Reaction $C(^3P)+CH(X^2\Pi)→C_2+H$

Abstract

Based on the 1²A" global three-dimensional adiabatic potential energy surface [Boggio-Pasqua et al., Phys Chem. Chem. Phys 2:1693-2000], a theoretical study of the stereodynamics of the reaction $C(^3P)+CH(X^2\Pi) (v=0; j=0$-$6)$ has been performed using the quasi-classical trajectories(QCT) method. The cross sections are caculated. The differential cross sections (DCSs) and the distributions of $P(θ_r),$ $P(\phi_r)$ are pensented in detail at the selected collision energy of 0.3 eV. The product rotational alignment parameter $$ are also obtained as a function of the regent rotational quantum number. The results show that the reagent rotational excitation plays an important role in the title reaction.