Apparatus for X-Ray Measurements at Very High Pressure
Authors:
- 1 January 1964
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 35 (1) , 29-33
Abstract
An apparatus has been developed which permits x‐ray powder patterns to be obtained to over 500 kilobars presure. The apparatus is derived in part from the supported tapered piston electrical resistance apparatus in use in this laboratory, but the x rays are transmitted through a thin layer of LiH with suitable platinum collimation. The pressures are established by measuring the change of lattice parameter of a suitable marker mixed with the sample. These changes are then compared with volume changes obtained in shock wave work. Usual markers used to date include silver, rhodium, and palladium. Typical data for sample pressure versus average applied pressure for these metals are given. Also included is the change in lattice parameter with pressure for CsCl to 500 kilobars. The results are compared with the extrapolation of Bridgman's data.Keywords
This publication has 3 references indexed in Scilit:
- X-Ray Diffraction Studies in the 100 Kilobar Pressure RangeJournal of Applied Physics, 1962
- Equation of State for Nineteen Metallic Elements from Shock-Wave Measurements to Two MegabarsJournal of Applied Physics, 1960
- The Compression of Twenty-One Halogen Compounds and Eleven Other Simple Substances to 100,000 kg/cmProceedings of the American Academy of Arts and Sciences, 1945