Time-resolved measurements of the structure of water at constant density

被引：23

作者：

Lindenberg, AM ^{[1
]}

Acremann, Y

Lowney, DP

Heimann, PA

Allison, TK

Matthews, T

Falcone, RW

机构：

[1] Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Expt Syst Grp, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[4] Dublin City Univ, Microelect Grp, Res Inst Networks & Commun Engn, Dublin 9, Ireland

来源：

JOURNAL OF CHEMICAL PHYSICS | 2005年 / 122卷 / 20期

关键词：

D O I：

10.1063/1.1906212

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dynamical changes in the structure factor of liquid water, S(Q,t), are measured using time-resolved x-ray diffraction techniques with 100 ps resolution. On short time scales following femtosecond optical excitation, we observe temperature-induced changes associated with rearrangements of the hydrogen-bonded structure at constant volume, before the system has had time to expand. We invert this data to extract transient changes in the pair correlation function associated with isochoric heating effects, and interpret these in terms of a decrease in the local tetrahedral ordering. (c) 2005 American Institute of Physics.

引用

页数：5

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