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

被引：167

作者：

Fuchs, O. ^{[1
]}

Zharnikov, M. ^{[2
]}

Weinhardt, L. ^{[3
]}

Blum, M. ^{[1
,3
]}

Weigand, M. ^{[1
]}

Zubavichus, Y. ^{[2
]}

Baer, M. ^{[3
]}

Maier, F. ^{[1
]}

Denlinger, J. D. ^{[4
]}

Heske, C. ^{[3
]}

Grunze, M. ^{[2
]}

Umbach, E. ^{[1
]}

机构：

[1] Univ Wurzburg, D-97074 Wurzburg, Germany

[2] Heidelberg Univ, INF 253, D-69120 Heidelberg, Germany

[3] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.100.027801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 1b(1) 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.

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页数：4

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