Scattering: collision-induced light

M. O. Bulanin and A. P. Kouzov. Simultaneous transitions in light-scattering spectra induced by collisions between molecules. Optika i Spektr. (U.S.S.R.), 53 266-269 (1982). 

G. Birnbaum, B. Guillot and S. Bratos, Theory of Collision-Induced Line Shapes - Absorption and Light Scattering at Low Density, Adv. Chem. Phys., 51, (1982) 49. 

Here, a. and a L are the polarizabilities of the diatom parallel and perpendicular to the internuclear separation, R12. The electrostatic theory accounts for the distortions of the local field by the proximity of a point dipole (the polarized collisional partner) and suggests that the anisotropy is given by ft Rn) 6intermolecular interactions). This is the so-called dipole-induced dipole (DID) model, which approximates the induced anisotropy of such diatoms often fairly well. It gives rise to pressure-induced depolarization of scattered light, and to depolarized, collision-induced Raman spectra in general. 

The concept of supermolecules allows a rather rigorous treatment of the aspects of collision-induced light scattering in the binary regime. The frequency dependence of the scattered light is described by the differential photon scattering cross section per unit angular frequency and per pair,... 

Several types of collision-induced light scattering spectra are known. We have already mentioned the depolarized translational spectra of rare gas pairs and bigger complexes which arise from the anisotropy of the diatom polarizability. Contrary to the infrared inactivity of like pairs, e.g., Ar-Ar like pairs are Raman active. Furthermore, polarized translational spectra... 

A. Borysow and L. Frommhold, Collision-induced light scattering a Bibliography, Adv. Chem. Phys. 75 (1989) 439-505. 

U. Bafile, L. Ulivi, M. Zoppi, M. Moraldi, and L. Frommhold. The third virial coefficients of collision-induced, depolarized light scattering of hydrogen. Phys. Rev. A, 44 4450, 1991. 

F. Barocchi, M. Neri, and M. Zoppi. Derivation of three-body collision induced light scattering spectral moments for argon, krypton, xenon. Molec. Phys., 34 1391, 1977. 

F. Barocchi and M. Zoppi. Collision induced light scattering Three- and four-body spectra of gaseous argon. Phys. Lett., A 69 187, 1978. 

G. Birnbaum, L. Frommhold, and G.C. Tabisz. Collision induced spectroscopy absorption and light scattering. In J. Szudy, ed., Spectral Line Shapes 5, p. 623, Ossolineum, Warsaw, 1989. 

L. Frommhold, K. H. Hong, and M. H. Proffitt. Collision-induced scattering of light by Ar pairs. Molec. Phys., 35 665, 1978. 

J. C. Lewis and J. van Kranendonk. Intercollisional interference effects in collision-induced light scattering. Phys. Rev. Lett., 24 802, 1970. 

N. Meinander and G. C. Tabisz. Information theory and line shape engineering approaches to spectral profiles of collision induced depolarized light scattering. Chem. Phys. Lett., 110 388, 1984. 

M. Moraldi. Quantum mechanical spectral moments in collision induced light scattering and collision induced absorption in rare gases at low densities. Chem. Phys., 78 243, 1983. 

M. Moraldi and L. Frommhold. Second and third virial coefficients of collision-induced absorption and light scattering. J. J. C. Teixeira-Dias, ed., Molecular Liquids New Perspectives in Physics and Chemistry,... 

J. D. Poll. Spectral moments, presentation at the Conference on Collision-induced Phenomena, Absorption, Light Scattering, and Static Properties, held at Florence, Italy, September 2-5, 1980. 

M. Zoppi, F. Barocchi, D. Varshneya, M. Neumann, and T. A. Litovitz. Density dependence of the collision induced light scattering spectral moments of argon. Can. J. Phys., 59 1475, 1981. 

Collision-induced Raman Light Scattering in Atomic Gas... 

In the collision-induced Raman experiments the laser light of wavenumber co0 is scattered inelastically by the interacting atoms in the gas. The intensities of the depolarized, D(v), and polarized, P(v), scattered light are given by323 324,... 

Frommhold L, Hong-Hong K, Proffitt MH (1978) Absolute cross sections for collision-induced depolarized scattering of light in krypton and xenon. Mol Phys 35 665-700... 

Barocchi F, Mazzinghi P, Zoppi M (1978) Collision-induced light scattering in gaseous helium. Phys Rev Lett 41 1785-1788... 

Barocchi F, Zoppi M (1981) Experimental determination of two-body collision-induced light scattering spectrum of helium. In Van Kranendonk J (ed) Intermolecular spectroscopy and dynamical properties of dense systems, Proceedings of the International School Enrico Fermi , Course LXXV, Amsterdam, North-Holland, pp263-274... 

Rachet F, Chrysos M, Guillot NC, Le Duff Y (2000) Unique case of highly polarized collision-induced light scattering The very far spectral wing by the helium pair. Phys Rev Lett 84 2120-2123... 

Rachet F, Le Duff Y., Guillot NC, Chrysos M (2000) Absolute isotropic spectral intensities in collision-induced light scattering by helium pairs over a large frequency domain. Phys Rev A 61 062501... 

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