暂时性负离子的间接解离动力学成像：N2O - -> N2 + O-
Imaging the indirect dissociation dynamics of temporary negative ion: N2O- -> N2 + O-
摘要：
本文报道了低能电子吸附过程中产生的暂时性负离子N_2O ~-解离动力学的成像研究，e ~- + N_2O ~-> N_2O ~-> N_2 + O ~-。借助从头算分子动力学计算，确定了O-碎片的动量分布随电子附着能的演化是两条截然不同的间接路径竞争的结果，即翻越和绕过分子结构弯曲后的能量脊.这两种途径更喜欢离开N2片段在高振动和旋转状态，分别。
英文摘要：
We reported an imaging study of the dissociation dynamics of temporary negative ion N2O- formed in the low-energy electron attachment, e- + N2O -> N2O- -> N2 + O-. With the help of ab initio molecular dynamics calculations, the evolution of momentum distributions of the O- fragment in terms of the electron attachment energy is identified as the result of a competition between two distinctly different indirect pathways, namely, climbing over and bypassing the energy ridge after the molecular structure bending. These two pathways prefer leaving the N2 fragment at the high vibrational and rotational states, respectively.
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