Compressibility of 22 elemental solids to 45 KB

Abstract The compressibility of 22 elemental solids has been measured by static methods in a piston cylinder apparatus to 45 kb. In most cases agreement with the data derived by reduction of shock wave data is extremely good. In a few cases, low pressure phase changes makes the agreement less good. In general, our new measurements of compressibility are in closer agreement with the results from shock data than they are with Bridgman's earlier results. The bulk moduli and some pressure derivatives have been estimated by fitting a Murnaghan equation and a modified Murnaghan equation to our data points, and these results are intercompared with the results from ultrasonic measurements, from shock measurements and from prior results of Bridgman.