Experiments and simulations on Al-Au mixtures and mixtures laws
- Departement de Physique Theorique et Appliquee, CEA/DAM Ile-de-France Boite Postale 12, 91680 Bruyeres-le-Chatel Cedex (France)
We measured the thermodynamical and transport properties of aluminum-gold mixtures in the warm dense matter regime and for various concentrations. We compare these measurements with quantum molecular dynamics (QMD) simulations. We find that the calculated pressures and resistivities of both the mixtures and pure phases are in good agreement with the measurements. This further allows us to test the mixing rules usually employed to predict the properties of the mixed phases from the pure ones. We show, in this regime, that the partial densities mixing rule predicts the pressure of the mixture rather accurately but fails in its prediction of the optical conductivity. To improve this latter prediction, we find that we must invoke an isothermal-isobaric mixture rule to compute the pure phase contributions at the correct densities.
- OSTI ID:
- 21055115
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 76, Issue 6; Other Information: DOI: 10.1103/PhysRevB.76.064204; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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