posted on 2021-04-20, 20:17authored byZefeng Hua, Yunxiao Zhao, Gaoming Hu, Shaowen Feng, Qiang Zhang, Yang Chen, Dongfeng Zhao
Chemical
reaction pathways and product state correlations of gas-phase
ion–molecule reactions are governed by the involved potential
energy surfaces (PESs). Here, we report the photodissociation dynamics
of charge-transfer complex [Ar–N2]+,
which is the intermediate of the model system of the Ar+ + N2 → Ar + N2+ reaction.
High-resolution recoiling velocity images of photofragmented N2 and N2+ from different dissociation
channels exhibit a vibrational state-specific correlation, revealing
the nonadiabatic charge-transfer mechanisms upon the photodissociation
of [Ar–N2]+. The state-resolved product
branching ratios have yielded an accurate determination of the resonant
charge-transfer probabilities. This work provides a powerful approach
to elucidating the detailed dynamics of chemical events of charge-transfer
complex [Ar–N2]+ and to probing the state-to-state
charge-transfer PESs.