Lattice Dynamics with Three-Body Forces. II. Krypton

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Abstract
An accurate pair potential for interaction of krypton atoms is derived by methods similar to those previously used for argon. This potential, in conjunction with the Axilrod-Teller three-body interaction, is used to calculate the Debye parameter, thermal expansion, and bulk modulus for crystalline krypton at low temperatures [(0-12)°K]. Agreement with experiment is very good except for a discrepancy of about 4% in the bulk modulus. As in the case of argon, this is tentatively ascribed to the effect of the helium pressure fluid on the lattice spacing.