| タイトル | Fluid hydrogen at high density - Pressure ionization |
| 著者（英） | Chabrier, Gilles; Saumon, Didier |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1992-08-15 |
| 言語 | eng |
| 内容記述 | The Helmholtz-free-energy model for nonideal mixtures of hydrogen atoms and molecules by Saumon and Chabrier (1991) is extended to describe dissociation and ionization in similar mixtures in chemical equilibrium. A free-energy model is given that describes partial ionization in the pressure and temperature ionization region. The plasma-phase transition predicted by the model is described for hydrogen mixtures including such components as H2, H, H(+), and e(-). The plasma-phase transition has a critical point at Tc = 15,300 K and Pc = 0.614 Mbar, and thermodynamic instability is noted in the pressure-ionization regime. The pressure dissociation and ionization of fluid hydrogen are described well with the model yielding information on the nature of the plasma-phase transition. The model is shown to be valuable for studying dissociation and ionization in astrophysical objects and in high-pressure studies where pressure and temperature effects are significant. |
| NASA分類 | ATOMIC AND MOLECULAR PHYSICS |
| レポートNO | 92A54480 |
| 権利 | Copyright |
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