Abstract
The design for a 30-kbar pressure apparatus is presented. A sample holder containing a heater winding was designed to permit the measurement of the dilatational and the rotational wave velocities in solids. The experimental procedure for the apparatus is discussed. Dilatational and rotational wave velocities were measured, by the single-pulse method, as the pressure and temperature were varied at pressures from 4.5 to 18 kbar and a temperature range from 22° to 1000°C. Samples investigated were Armco iron, 0.7% carbon steel, normal uranium, Burma jadeite, and Labradorite. A computer program was written to adjust the velocities for the change in the sample's dimensions due to the change in temperature and the change in pressure. The program calculates the elastic moduli of the sample and fits a linear or quadratic curve to the points (linear or quadratic in pressure and temperature).
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