期刊
JOURNAL OF CHEMICAL PHYSICS
卷 147, 期 15, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4991893
关键词
-
资金
- National Science Foundation (NSF) [CHE-1212114]
Second-harmonic or hyper-Rayleigh scattering (HRS) is sensitive to molecular interactions and correlations, and there is a large coherent HRS contribution for water. This work shows that the distinctive angle and polarization dependence observed for HRS from water is due to the long-range orientation correlation of the molecules. The results of HRS experiments for water are analyzed in combination with a molecular dynamics simulation to determine the molecular hyperpolarizability and the short-range and long-range orientation correlation functions for the molecules. At long range, the longitudinal and transverse dipole-dipole orientation correlation functions are B-L(r) = -2B(T)(r) = a(3)/r(3) with a = 0.166 nm. Molecular correlation at distances r > 100 nm must be included to account for the HRS observations. Published by AIP Publishing.
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