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Phys. Rev. Lett. 100, 027801 (2008) [4 pages]

Isotope and Temperature Effects in Liquid Water Probed by X-Ray Absorption and Resonant X-Ray Emission Spectroscopy

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O. Fuchs1,*, M. Zharnikov2,*, L. Weinhardt3, M. Blum1,3, M. Weigand1, Y. Zubavichus2,†, M. Bär3, F. Maier1, J. D. Denlinger4, C. Heske3,*, M. Grunze2, and E. Umbach1
1Universität Würzburg, Experimentelle Physik II, Am Hubland, 97074 Würzburg, Germany
2Angewandte Physikalische Chemie, Universität Heidelberg, INF 253, 69120 Heidelberg, Germany
3Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154, USA
4Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA

Received 10 March 2007; published 16 January 2008

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.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.027801
DOI:
10.1103/PhysRevLett.100.027801
PACS:
61.25.Em, 78.70.En, 82.30.Rs

*To whom correspondence should be addressed:

oliver.fuchs@physik.uni-wuerzburg.de

michael.zharnikov@urz.uni-heidelberg.de

heske@unlv.nevada.edu

†Present address: Institute of Organoelement Compounds, RAS, 119991 Moscow, Russia.

See Also

Comment: L. G. Pettersson, T. Tokushima, Y. Harada, O. Takahashi, S. Shin, and A. Nilsson, Comment on “Isotope and Temperature Effects in Liquid Water Probed by X-Ray Absorption and Resonant X-Ray Emission Spectroscopy”, Phys. Rev. Lett. 100, 249801 (2008).

Reply: O. Fuchs, M. Zharnikov, L. Weinhardt, M. Blum, M. Weigand, Y. Zubavichus, M. Bär, F. Maier, J. D. Denlinger, C. Heske, M. Grunze, and E. Umbach, Fuchs et al. Reply:, Phys. Rev. Lett. 100, 249802 (2008).

 
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