Equation of State for Nineteen Metallic Elements from Shock‐Wave Measurements to Two Megabars

Plane‐wave explosive systems were used to accelerate thin metal plates to high velocities. Shock pressures resulting from the collision of these driver plates with a stationary target plate are approximately three times greater than the original shock pressure in the driver plate. The photographic flash‐gap technique was used to record velocities associated with the shock waves. The new experimental data extend the Hugoniot loci into the one‐to two‐megabar region for 19 metallic elements: Ag, Au, Cd, Co, Cr, Cu, Mo, Ni, Pb, Sn, Th, Ti, Tl, V, W, Zn, Bi, Fe, Sb.The Hugoniot P, V, E data have been extended to a more complete P, V, E, T equation of state by use of the Mie‐Gruneisen theory. The thermodynamic variable, γ=V(∂P/∂E)v, necessary for this extension, was obtained by solving the Dugdale‐MacDonald relation.

[1]  W. E. Deal.  Measurement of the Reflected Shock Hugoniot and Isentrope for Explosive Reaction Products , 1958 .

[2]  P. W. Bridgman.  The Compression of Twenty-One Halogen Compounds and Eleven Other Simple Substances to 100,000 kg/cm , 1945 .

[3]  D. G. Doran,et al.  HUGONIOT EQUATION OF STATE OF ALUMINUM AND STEEL FROM OBLIQUE SHOCK MEASUREMENT , 1959 .

[4]  J. Walsh,et al.  Dynamic Compression of Liquids from Measurements on Strong Shock Waves , 1957 .

[5]  W. Drummond.  Multiple Shock Production , 1957 .

[6]  Clifford A. Hampel,et al.  Rare Metals Handbook , 1961 .

[7]  R. Duff,et al.  INVESTIGATION OF A SHOCK-INDUCED TRANSITION IN BISMUTH , 1957 .

[8]  W. E. Forsythe,et al.  Smithsonian Physical Tables , 1921, Nature.

[9]  P. W. Bridgman.  Linear Compressions to 30,000 Kg/Cm, including Relatively Incompressible Substances , 1949 .

[10]  P. W. Bridgman.  Polymorphism, Principally of the Elements, up to 50,000 kg/cm 2 , 1935 .

[11]  P. W. Bridgman.  Compressions and Polymorphic Transitions of Seventeen Elements to 100,000 kg/cm 2 , 1941 .

[12]  J. Walsh,et al.  EQUATION OF STATE OF METALS FROM SHOCK WAVE MEASUREMENTS , 1955 .

[13]  Eric L. Peterson,et al.  Polymorphism of Iron at High Pressure , 1956 .

[14]  Richard Courant,et al.  Supersonic Flow And Shock Waves , 1948 .

[15]  W. E. Deal,et al.  Free Surface Properties of Explosive-Driven Metal Plates , 1953 .

[16]  P. W. Bridgman.  Pressure-Volume Relations for Seventeen Elements to 100,000 Kg/Cm , 1942 .

[17]  R. Mcqueen,et al.  SHOCK-WAVE COMPRESSIONS OF TWENTY-SEVEN METALS. EQUATIONS OF STATE OF METALS , 1957 .