期刊
CHEMICAL PHYSICS LETTERS
卷 386, 期 4-6, 页码 295-300出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2004.01.042
关键词
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Ultrafast infrared vibrational echo correlation spectroscopy with full phase information of the entire O-D stretching band of HOD in H2O and molecular dynamics simulations are employed to investigate water dynamics. The wavelength dependence of the measured dynamics demonstrates that different hydrogen bonded water species are subject to distinct ultrafast (similar to100 fs) local fluctuations and essentially identical slower (0.4 ps to similar to2 ps) structural rearrangements. Simulations provide insights into the nature of the very fast and slower dynamics. The results also show that the theoretical methods that are widely used in the description of nonlinear optical experiments need to be advanced to adequately describe water dynamics. (C) 2004 Elsevier B.V. All rights reserved.
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