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He4 Thermophysical Properties: New ab initio Calculations

Published

Author(s)

John J. Hurly, J B. Mehl

Abstract

Since 2000, atomic physicists have reduced the uncertainty of the helium-helium ab initio potential,for example, from approximately 0.6% to 0.1% at 4 bohr and from 0.8% to 0.1% at 5.6 bohr.These results led us to: (1) construct a new interatomic potential f06, (2) recalculate values of thesecond virial coefficient, the viscosity, and the thermal conductivity of 4He from 1 K to 10,000 K, and(3), analyze the uncertainties of the thermophysical properties that propagate from the uncertaintyof f06 and from the Born-Oppenheimer approximation of the electron-nucleon quantum mechanicalsystem. We correct minor errors in a previous publication [J. J. Hurly and M. R. Moldover, J. Res.Nat. Inst. Standards Technol. 105, 667 688, (2000)] and compare our results with selected data publishedafter 2000. The ab initio results tabulated here can serve as standards for the measurementof thermophysical properties.
Citation
Journal of Chemical Physics

Keywords

ab initio, helium, properties, second virial coefficient, thermal conductivity, viscocity

Citation

Hurly, J. and Mehl, J. (2008), He<sup>4</sup> Thermophysical Properties: New ab initio Calculations, Journal of Chemical Physics (Accessed April 15, 2024)
Created October 16, 2008