Velocity of sound isotherms in liquid krypton and xenon

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Abstract
The velocity of sound was measured with a precision of 0.1% in liquid krypton and xenon at pressures between the vapor pressure and about 65 atm, from near their triple points to near their critical points.A corresponding states treatment of these measurements and previous results in argon showed that, with a suitable choice of relative molecular parameters (σ,ε), the W*(P*,T*) surfaces were coincident to within the experimental error, except for argon near the critical temperature.The relative values of the effective atomic radii σ obtained from this analysis were somewhat lower than those obtained from other thermodynamic properties.

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