Development and experimental verification of a method for assessment of consistency of the thermodynamic and structural properties of binary coolants based on systems of alkali metals

The construction of correlation function of concentration fluctuations $S_{cc}(0) = f(T, x_i)$ is used to validate the criterion of assessment of the internal consistency of the thermodynamic and structural properties of liquid-metal alloys, as well as of the reliability of experimental data on the Gibbs energy of solution formation $\Delta G$, methods of their approximation, and theoretical models which reproduce the behavior of $\Delta G$. The method is verified for the Cs—Na, K—Na, and Cs—K systems of alkali metals using the data of thermodynamic experiment in determining the Gibbs energy of formation of liquid-metal solution $\Delta G$ which is the basis for construction of the function $S_{cc}(0)$. The data on statistical structure factor $S(0)$ uniquely related to function $S_{cc}(0)$ are obtained using the results (available in the literature) of experiments in X-ray and neutron spectroscopy, including data on diffraction and small-angle inelastic scattering.