Determination of the Frequency Dispersion Region of the Transport Coefficients of Classical Liquids Depending on the Character of Attenuation of Relaxing Flows

We consider the frequency dispersion region of dynamic shear viscosity coefficient ηs (ω) simple liquids obtained by method kinetic equations, where equilibrium structure a liquid is restored according to diffusion law or exponentially. At certain choice intermolecular interaction potential Φ (|r|) and radial distribution function g0 (|r|), for argon was numerically calculated as density ρ, temperature T, ω. The theoretical values are in satisfactory quantitative agreement with experimental data. It shown that on basis diffusive mechanism, i.e. structural relaxation, large (~ 105 Hz). In case exponential attenuation viscous stress tensor, this narrow 102 Hz), which agrees both acoustic measurements results phenomenological theory.