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Updated: Feb 19, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
An accidental resonance mediated predissociation pathway of water molecules excited to the electronic C[combining
Zhigang He1, Dongyuan Yang, Zhichao Chen
1State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian 116023, Liaoning, China. wugr@dicp.ac.cn xmyang@dicp.ac.cn.
Abstract:
The predissociation dynamics of water molecules in the electronic C[combining tilde] state were studied using the time-resolved photoelectron imaging method. Both vibrationless and vibrationally excited states in the C[combining tilde] electronic state were studied, with an emphasis on the vibrational excitation effects on the predissociation dynamics of the C[combining tilde] 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 C[combining tilde] electronic state of H2O is revealed, providing an excellent example of competition between non-adiabatic decay pathways involving at least five electronic states.
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