Abstract
Pressure calibration in static compression experiments have been undertaken on the basis of the equation of state (EOS) derived from the Hugoniot data of the pressure scale materials such as Au, Pt and MgO. However, room-temperature isothermal compression curve and further high temperature compression curve have been derived by using the assumed Grüneisen parameters, which cause the larger error at the higher temperature. If the Hugoniot data of the heated sample are measured, the accurate high-temperature EOS can be obtained, and the Grüneisen parameter (γ) can be directly discussed. We have measured Hugoniot data of Cu, W, Au, etc. by using the high-time resolution streak camera system equipped with a powder gun and two-stage light gas gun. In this study, the Hugoniot-measurement technique of the elevated temperature sample using high-frequency heating apparatus was established equipped with a powder gun. We succeeded in the measurement of the Hugoniot data (shock-velocity and particle-velocity) of the heated sample at 800°C on W.
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