Rayleigh scattering, interaction-induced Raman

Depolarized Rayleigh scattering experiments will certainly profit from improvements of laser systems, of spectrometer components and of spectra sampling cuid data evaluation systems. The most severe difficulty facing the depolarized Rayleigh and Raman technique to study reorientational dynamics in liquids, however, is not technical but is the problem of the separation of the orientational from the non-orientational interaction induced spectral contributions. So far, no reliable separation procedure has been developed in general. Recent molecular dynamics calculations even have cast some doubt on the validity of separation schemes so far considered to be valid under rather general conditions. ... 

At present, in spite of the well-known fact that the interaction of atoms and molecules leads to the changing of their multipole moments and (hyper)polariz-abilities [1-3], only the simple moments and polarizabilities of interacting molecules such as interaction-induced dipole moments and dipole polarizabilities have widely studied. Nevertheless, the induced dipole moments and polarizabilities play the important role in understanding the collision-induced absorption, collision-induced Rayleigh scattering or collision-induced Raman light scattering [4-9],... 

---