Abstract
The electrical conductivity and viscosity of concentrated solutions above several moles per liter are investigated by treating electrolyte solution as high-density plasma (strongly coupled plasma), where the Coulomb interaction energy is larger than the thermal kinetic energy. The normalized nondimensional conductivity, which is the electrical conductivity divided by the ion concentration and scaling parameters, is expressed as a function of the coupling constant Γ≡(Coulomb energy)/(thermal energy)=((ze)2/εa)/kT, where ε is the dielectric constant, a is the interionic distance and k is the Boltzmann constant. The normalized nondimensional conductivities of molten alkali halides except for fluoride at various temperatures lie on a single curve as a function of the Coulomb coupling parameter Γ. These molten salts can be good models for high-density plasma in spite of their different ion sizes.
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