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The pressure-volume-temperature equation of state of MgO derived from shock Hugoniot data and its application as a pressure scale.
- Source :
-
Journal of Applied Physics . Jun2010, Vol. 107 Issue 11, p113518. 6p. 2 Charts, 6 Graphs. - Publication Year :
- 2010
-
Abstract
- The pressure-volume-temperature (P-V-T) equation of state (EOS) of MgO is widely used as a pressure scale in static compression experiments. However, there are remarkable inconsistencies among different previously proposed MgO pressure scales. We calculated the P-V-T EOS of MgO up to 300 GPa and 3000 K based on experimental shock Hugoniot data and a simple thermal pressure model within the Mie-Grüneisen-type analysis framework. All of the parameters used can be measured experimentally with high accuracies. We found that, in overall, the calculated P-V-T EOS of MgO has excellent agreement with the available volume compression data over a wide range of pressure and temperature. A comparison of our results with the previous theoretical investigations has also been performed and confirms that our calculated P-V-T EOS of MgO can be used as a reliable pressure scale for static experiments at high pressures and high temperatures. [ABSTRACT FROM AUTHOR]
- Subjects :
- *EQUATIONS of state
*TEMPERATURE
*STATICS
*SHOCK waves
*BRILLOUIN scattering
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 107
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 55566781
- Full Text :
- https://doi.org/10.1063/1.3406140