Helium collision-induced light scattering

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... 

F. Barocchi and M. Zoppi. Experimental Determination of Two-Body Collision Induced Light Scattering of Helium." In J. van Kranendonk (ed.), Intermolecular Spectroscopy and Dynamical Properties of Dense Systems—Proceedings of the International School of Physics "Enrico Fermi," Course LXXV, North-Holland, Amsterdam, 1980, pp. ICi-llA. 

The collision-induced light scattering in the helium gas has been subject of many experimental studies (35)-(42). Most of these measurements were done at high densities (35)-(37), so the reported Raman intensities were affected by three-body contributions, and pure pair spectra had to be separated out (37) by applying simplified models. Only the polarized... 

The Raman spectra of solids have a more or less prominent collision-induced component. Rare-gas solids held together by van der Waals interactions have well-studied CILS spectra [656, 657]. The face-centered, cubic lattice can be grown as single crystals. Werthamer and associates [661-663] have computed the light scattering properties of rare-gas crystals on the basis of the DID model. Helium as a quantum solid has received special attention [654-658] but other rare-gas solids have also been investigated [640]. Molecular dynamics computations have been reported for rare-gas solids [625, 630, 634]. 

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