An accidental resonance mediated predissociation pathway of water molecules excited to the electronic (C)over-tilde state
An accidental resonance mediated predissociation pathway of water molecules excited to the electronic (C)over-tilde state
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意外共振介导的水分子激发至电子（C）超波浪状态的预解离途径
DOI：
10.1039/c7cp06286a
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发表时间：
2017
影响因子：
3.3
通讯作者：
Yang Xueming
中科院分区：
文献类型：
--
作者：
He Zhigang;Yang Dongyuan;Chen Zhichao;Yuan Kaijun;Dai Dongxu;Wu Guorong;Yang Xueming
采用时间分辨光电子成像方法研究了电子态水分子的预解离动力学。研究了电子态中的无振动和振动激发态，重点是振动激发对电子态预解离动力学的影响。除了众所周知的旋转和非旋转介导的预解离途径（Proc. Natl. Acad. Sci. U. S. A., 2008, 105, 19148）之外，还揭示了 H2O 电子态中第一弯曲模式激发态的偶然共振介导的预解离途径，为涉及至少五个电子态的非绝热衰变路径之间的竞争提供了一个很好的例子。
The predissociation dynamics of water molecules in the electronic state were studied using the time-resolved photoelectron imaging method. Both vibrationless and vibrationally excited states in the electronic state were studied, with an emphasis on the vibrational excitation effects on the predissociation dynamics of the state. Besides the well-known rotationally and non-rotationally mediated predissociation pathways (Proc. Natl. Acad. Sci. U. S. A., 2008, 105, 19148), an accidental resonance mediated predissociation pathway for the first bending mode excited state in the electronic state of H2O is revealed, providing an excellent example of competition between non-adiabatic decay pathways involving at least five electronic states.