title: Imaging the O(1D) + CD4 → OD + CD3 reaction dynamics: probing vibrationally and rotationally excited CD3 products.
abstract: The dynamics of the O((1)D) + CD(4) → OD + CD(3) reaction has been studied using the crossed molecular beam technique with sliced velocity map imaging. Internally excited CD(3) products were detected using a (2+1) resonance-enhanced multiphoton ionization with state resolution. Dual reaction mechanisms, insertion and abstraction, were only observed for CD(3) products with its umbrella mode (v(2)) excited or in its ground state, while CD(3) products with other vibrational mode excited do not show any evidence of contributions from the abstraction pathway. Experimental results indicate that even though the insertion channel dominates the reaction, the abstraction channel contributes relatively more to vibrationally excited CD(3) products. The state-to-state correlation between the two reaction products, OD and CD(3), was determined for the abstraction channel at different collision energies. In addition, we measured rotationally hot CD(3) products and found that these products are only produced via the insertion channel.
authors.affiliation: State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People's Republic of China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Shuai
authors.forename: Huilin
authors.initials: H
authors.lastname: Pan
authors.forename: Jiayue
authors.initials: J
authors.lastname: Yang
authors.forename: Dong
authors.initials: D
authors.lastname: Zhang
authors.forename: Bo
authors.initials: B
authors.lastname: Jiang
authors.forename: Dongxu
authors.initials: D
authors.lastname: Dai
authors.forename: Xueming
authors.initials: X
authors.lastname: Yang