# Argon

**Argon** has a mass of 39.948 umas. Sadus and Prausnitz have shown that three-body repulsion makes a significant contribution to three-body interactions in the liquid phase (Ref. 4) (for use of the Axilrod-Teller interaction see Refs. 5 and 6). However, the generic Lennard-Jones model has been frequently used due to its simplicity; some parameters are quoted in the next section. A specific interatomic potential for Ar has been proposed by Aziz (Ref. 10).

## Contents

## Lennard-Jones parameters

The Lennard-Jones parameters for liquid argon are listed in the following table:

Authors | (K) | (nm) | Reference |

Rowley, Nicholson and Parsonage | 119.8 | 0.3405 | Ref. 7 |

Barker, Fisher and Watts | 142.095 | 0.33605 | Ref. 8 |

White | 125.7 | 0.3345 | Ref. 9 parameter set #4 |

## Radial distribution function

## Quantum simulations

## References

- H. C. Longuet-Higgins and B. Widom "A rigid sphere model for the melting of argon", Molecular Physics
**8**pp. 549-556 (1964) - D. Henderson and J. A. Barker "On the solidification of argon", Molecular Physics
**14**pp. 587-589 (1968) - F. Lado "Numerical Calculation of the Density Autocorrelation Function for Liquid Argon", Physical Review A
**5**pp. 2238-2244 (1972) - Richard J. Sadus and J. M. Prausnitz "Three-body interactions in fluids from molecular simulation: Vapor–liquid phase coexistence of argon", Journal of Chemical Physics
**104**pp. 4784-4787 (1996) - Phil Attard "Pair-hypernetted-chain closure for three-body potentials: Results for argon with the Axilrod-Teller triple-dipole potential", Physical Review A
**45**pp. 3659-3669 (1992) - J. A. Anta, E. Lomba and M. Lombardero "Influence of three-body forces on the gas-liquid coexistence of simple fluids: The phase equilibrium of argon", Physical Review E
**55**pp. 2707-2712 (1997) - L. A. Rowley, D. Nicholson and N. G. Parsonage "Monte Carlo grand canonical ensemble calculation in a gas-liquid transition region for 12-6 Argon", Journal of Computational Physics
**17**pp. 401-414 (1975) - J. A. Barker, R. A. Fisher and R. O. Watts "Liquid argon: Monte carlo and molecular dynamics calculations", Molecular Physics
**21**pp. 657-673 (1971) - John A. White "Lennard-Jones as a model for argon and test of extended renormalization group calculations", Journal of Chemical Physics
**111**pp. 9352-9356 (1999) - Ronald A. Aziz "A highly accurate interatomic potential for argon", Journal of Chemical Physics
**99**p. 4518 (1993)