RAYLEIGH LIGHT-SCATTERING, ISOTHERMAL COMPRESSIBILITY AND KERR CONSTANT OF PURE LIQUIDS - AGREEMENT OBTAINED WITH CONSISTENT THEORETICAL RELATIONS

Consistent theoretical expressions of the depolarization ratio rho(n) and of the relative depolarized intensity i(r) in Rayleigh light scatt ering yield a simple suitable relation between the isothermal compress ibility beta(T) and those quantities. Beta(T) values thus calculated i n thirty five pure liquids are compared to experimental values and to values calculated with the classical relation. The values deduced from the new relation are in better accordance with the experimental resul ts and the deviations are more randomly distributed. A suitable expres sion of the static Kerr constant B is also deduced from the same theor etical basis and applied to sixteen pure polar liquids. A good accorda nce between theory and experiment is observed when no strong specific interactions occur.