| Download | - View final version: Hydrogen-helium mixtures in the interiors of giant planets (PDF, 1.4 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevB.75.024206 |
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| Author | Search for: Vorberger, J.; Search for: Tamblyn, I.; Search for: Militzer, B.; Search for: Bonev, S. A. |
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| Format | Text, Article |
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| Abstract | Equilibrium properties of hydrogen-helium mixtures under conditions similar to the interior of giant gas planets are studied by means of first-principles density functional molecular dynamics simulations. We investigate the molecular and atomic fluid phases of hydrogen with and without the presence of helium for densities between 0.19 and 0.66gcm−3 and temperatures from 500to8000K. Helium has a crucial influence on the ionic and electronic structure of the liquid. Hydrogen molecule bonds are shortened as well as strengthened which leads to more stable hydrogen molecules compared to pure hydrogen for the same thermodynamic conditions. The ab initio treatment of the mixture enables us to investigate the validity of the widely used linear mixing approximation. We find deviations of up to 8% in energy and volume from linear mixing at constant pressure in the region of molecular dissociation. |
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| Publication date | 2007-01-11 |
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| Publisher | American Physical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC publication | This is a non-NRC publication"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC. |
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| NPARC number | 23003172 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 0c5d68ef-8082-4d1b-ae0b-ad88b06cdd18 |
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| Record created | 2018-05-03 |
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| Record modified | 2020-05-30 |
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