Molecular light scattering

L. D. Barron, Molecular light scattering and optical activity. Cambridge University Press, Cambridge, 2nd ed., 2004. 

The signal generation principle of Raman is inelastic molecular light scattering, in contrast to resonant energy absorption/emission in IR spectroscopy. During the measurement, the sample is irradiated with intense monochromatic radiation. While most of this radiation is transmitted, refracted or reflected, a small amount is scattered at the molecules. 

Sec articles in Optical Activity and Chiral Discrimination, Mason, S. F., Ed. Reidel Dordrecht, 1979 and Barron, L. D. Molecular Light Scattering and Optical Activity Cambridge London, 1982. 

Barron LD. Molecular Light Scattering and Optical Activity, 2nd edn. Cambridge University Press, Cambridge, UK New York, 2004, xxii, 443 pp. 

Table I Information Available from Elastic and Inelastic Molecular Light Scattering...

In the absence of electron dispersion and absorption, the tensor of second-order non-linear polarizability ft(— cog coi, tog) can be dealt with as totally symmetric, and the numbers of its non-zero and independent elements are to be found in Table 11. Static values of the nonJinear polarizability = i(0 0,0) have been calculated theoretically for some molecules. Tensor elements A" = fi(— Kerr effect or molecular light scattering in liquids. ... 

S. Kielich. Molecular light scattering in dense mixtures. Acta Phys. Polonica, 33 63-79 (1968). 

R. W. Hellwarth. Theory of molecular light scattering spectra using the linear dipole approximation. J. Chem. Phys., 52 2128-2138 (1970). 

S. Kielich. On the relation between nonlinear refractive index and molecular light scattering in liquids. Chem. Phys. Lett., 2 112-115 (1968). 

L.Barron, Molecular Light Scattering and Optical Activity (Cambridge... 

Anomalies of molecular light scattering, discovered in polyamidoacid and polyimide solutions in dimethylformamidc and dimethylacetamide al concentrations c > cv 0.5 g/dl (Diakonova el al., 1986) are apparently related to the presence of crystallites. The absence of scattering asymmetry (hs /Ivjs" 1-1) attests to the small sizes of those particles. 

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