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Isotope and temperature effects in liquid water probed by x-ray absorption and resonant x-ray emission spectroscopy

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Grunze,  Michael
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Fuchs, O., Zharnikov, M., Weinhardt, L., Blum, M., Weigand, M., Zubavichus, Y., et al. (2008). Isotope and temperature effects in liquid water probed by x-ray absorption and resonant x-ray emission spectroscopy. Physical Review Letters, 100: 027801, pp. 1-4. doi:10.1103/PhysRevLett.100.027801.


Cite as: http://hdl.handle.net/21.11116/0000-0001-9917-9
Abstract
High-resolution x-ray absorption and emission spectra of liquid water exhibit a strong isotope effect. Further, the emission spectra show a splitting of the 1b1 emission line, a weak temperature effect, and a pronounced excitation-energy dependence. They can be described as a superposition of two independent contributions. By comparing with gas phase, ice, and NaOH/NaOD, we propose that the two components are governed by the initial state hydrogen bonding configuration and ultrafast dissociation on the time scale of the O 1s core hole decay.