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Updated: Aug 16, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Ultrafast core-hole-induced dynamics in water probed by x-ray emission spectroscopy
Michael Odelius1, Hirohito Ogasawara, Dennis Nordlund
1FYSIKUM, Stockholm University, Albanova, S-106 91 Stockholm, Sweden. Michael.Odelius@physto.se
Abstract:
The isotope effect and excitation-energy dependence have been measured in the oxygen K-edge x-ray emission spectrum (XES). The use of XES to monitor core decay processes provides information about molecular dynamics (MD) on an ultrafast time scale through the O1s lifetime of a few femtoseconds. Different nuclear masses give rise to differences in the dynamics and the observed isotope effect in XES is direct evidence of the importance of such processes. MD simulations show that even the excitation-energy dependence in the XES is mainly related to differences in core-excited-state dynamics.
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