Thermal behavior of inert gas crystals

The equilibrium characteristics of inert gas crystals and isothermal compressibility were determined by the modified method of the functional of electron density (MMFED), based on the application of a variational procedure fdr minimization of the energy of an isolated atom. The equations of ''cold compression'' were derived. The approximation-free potentials were used to calculate the surface energy and surface tension of Ne-Ne, Ar-Ar, and Kr-Kr crystals. Comparison with experiment demonstrates the possibility of using the MMFED for the calculation of crystalline potentials.