| Autor: |
W.B. Daniels, D. Benson, W.F. Lewis, R.K. Crawford |
| Rok vydání: |
1974 |
| Předmět: |
|
| Zdroj: |
Journal of Physics and Chemistry of Solids. 35:383-391 |
| ISSN: |
0022-3697 |
| DOI: |
10.1016/s0022-3697(74)80031-4 |
| Popis: |
Isochoric P-T traces have been measured for solid argon at eight different molar volumes by using a capacitance technique which records the radial expansion of the vessel due to pressure. These measurements extend from melting curve temperatures down to 4 °K at pressures ranging up to 7 kbar. Analysis of the data indicates that, for the high temperature region (above 80 °K) the thermodynamic derivative ∂P/∂T r is independent of both temperature and density to within experimental errors. Using the fact that ∂P/∂T r is constant, it is possible to generate PVT and isothermal bulk modulus data at high temperatures. These data are compared with X-ray diffraction measurements and piston displacement data and are found to be in good agreement with both. The data also agree quite well with current theoretical predictions. The high-temperature bulk modulus data were found to have a simple exponential dependence on the molar volume, prividing another convenient representation of the high-temperature equation-of-state data. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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