Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 122, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1906212
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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.
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