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J Chem Phys. 2010 Apr 21;132(15):154506. doi: 10.1063/1.3385893.

Nonlocal hyper-Rayleigh scattering from liquid nitrobenzene.

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  • 1Department of Physics and Astronomy, University of Nevada, Las Vegas, Nevada 89154-4002, USA. shelton@physics.unlv.edu

Abstract

Hyper-Rayleigh scattering (HRS) from liquid nitrobenzene was measured for several combinations of linear polarized incident and scattered light, for a range of scattering angles near 90 degrees . The observations show that the HRS intensity is dominated by the polar transverse collective mode contribution, and support a model where the long range dipole-dipole orientation correlations in a polar liquid result in coherent HRS from beta((1)), the vector part of the molecular first hyperpolarizability beta, whereas HRS from the octupolar part beta((3)) remains local and incoherent.

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