Anisometric molecules in dense fluids

Publisher Website
Google Scholar
Abstract
The intensity of depolarized light scattered by a solution of anisotropic molecules in a non-depolarizing solvent is considered within the framework of the ellipsoidal cavity model. It is shown that the depolarized intensity is given by the same formula as in dilute gases, but replacing the vacuum molecular polarizabilities α zz , etc., by effective polarizabilities α zz * defined as Here ε is the optical dielectric constant of the solution, a, b and c are the principal semi-axes of the ellipsoidal cavity, Sz is the shape-dependent depolarizing factor, and fz is the ε-dependent Onsager-Scholte internal field factor. This theory withstands the essential self-consistency test that the depolarization must be identically zero if the solute molecule is replaced by an isotropic ellipsoidal body of dielectric constant ε filling the cavity.