Equation of state and melting curve of helium to very high pressure
- 1 November 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 24 (9), 5119-5127
- https://doi.org/10.1103/physrevb.24.5119
Abstract
An "exponential-six" interatomic pair potential, together with accurate statistical models for solid and liquid phases, is shown to yield good agreement with experimental pressure-volume and melting-curve data for up to 120 kbar. For pressures from 120 kbar to 250 Mbar, linear-muffin-tin-orbitals electron-band-theory calculations have been used to obtain the pressure-volume isotherm. An effective pair potential is fitted to these results in order to compute the melting curve and shock Hugoniot curve in this region. The band-theory calculations indicate metallization at 112 Mbar.
Keywords
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