The Metal-Insulator Transition in Expanded Fluid Metals

Equation of state for fluid alkali metals: Binodal

“…However, this equation is not suitable for the quantitative description of the thermodynamic properties of fluid metals. This can easily be seen from the following example: according to this equation, for any substance, the liquid phase's reduced density in the lowtemperature region is around three, whereas the experimental data [2] show that this value is greater than five.…”

“…The accuracy of these high-temperature measurements is not good. This can be illustrated by the following fact: according to a review [1], the mean value of cesium's critical temperature by numerous experimental data is 2043 K, whereas recent results [2] show that this value is 1924K. This fact indicates the acute necessity for constructing the high-temperature equation of state for alkali metals.…”

Correlations of supercritical temperature of fluid alkali metals

“…The parameter n of the generalised van der Waals equation of state was determined [38] through experimental data on liquid density and heat of evaporation at melting point [45,46] and on critical temperature [4] for the fluid alkali metals. The values of the parameter n are presented in Table 1.…”

“…As can be seen, the value of the ratio of the supercritical temperature to the maximum attainable temperature of superheating for caesium, rubidium and potassium is practically the same. In Table 1, the values of the ratio of the supercritical temperature to the maximum attainable temperature of superheating determined through experimental data on vapour pressure [47] , compressibility factor [48,49] and on critical compressibility factor [4] are also presented. Our estimation gives percent errors of −5.4041%, −5.2448% and −5.3766% for caesium, rubidium and potassium, respectively.…”

Equation of state and manifestation of non-spherical contribution of interaction potential in liquid rubidium metal

“…This leads to a complete determination of an equation of state for liquid alkali metal, in particular for liquid rubidium. The role of B and C has not been investigated fully but it has been determined that, in the case of normal liquids, the variation of B conforms to 2 B . The method of investigation and the role of B have been reported recently for liquid cesium and a brief introduction will be given in the following section.…”