EQUILIBRIUM ORIENTATIONAL DISTRIBUTION OF DIPOLE PARTICLES IN VISCOELASTIC FLUID

The Fokker-Planck equation (FPE) was derived for the ensemble of the B rownian particles in a viscoelastic fluid. Each particle was assumed t o have rigid (frozen) dipole moment, through which the external field affects the system orientation. An equilibrium solution of FPE was fou nd. It was shown that the combination of particle inertia and dynamic elasticity of a fluid provides a complicated contribution to the equil ibrium distribution function, thus resulting in the essential distinct ion of this function from the standard Gibbs distribution.