The Evaluation of Pressure Under Heating in a High Pressure Apparatus

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The possibility of high pressure evaluation at high temperature in the anvil type high pressure apparatus (HPA), is analyzed by a simple model. It is shown that at a certain moment after HPA loading the deformation of the compressible gasket may be described by equations for the elastic strains of matter, particularly by the Murnaghan equation. The latter can be used for high pressure evaluation by the measurement of gasket thickness. Some experimental data in the range of P-T parameters 3.5–4.5 GPa and 1300–1500 K are cited as examples of utilizing this high pressure evaluation method.

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