The Compressibility of Gaseous Krypton. II. The Virial Coefficients and Potential Parameters of Krypton

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Abstract
The second and third virial coefficients of a sample of krypton containing 0.90 mole percent xenon have been determined from our compressibility measurements over the temperature range 0° to 300°C and to a density of 10 mole per liter. They are listed in Table II. The parameters of the Lennard‐Jones (6, 12) potential for krypton are μ=2.044×10−58 erg‐cm6, λ=0.438×10−102 erg‐cm12, ε=238.4×10−16 erg, b0=58.40 cm3 per mole, θ=172.7°K, σ=3.591×10−8 cm, r0=4.030×10−8 cm. The representation of the second virial coefficient is quite satisfactory. The third virial coefficients diverge more than those of xenon from the theoretical values for a Lennard‐Jones (6, 12) potential as tabulated by Bird, Spotz, and Hirschfelder. The observed second virial coefficients agree moderately well with the tabulated values of Buckingham and Corner for an inverse sixth and inverse eighth power attractive and an exponential repulsive potential when the tables are used in conjunction with the values of the arguments derived by Kane from data on the solid state of krypton and Born and Mayer's value of the exponent derived for neon.