High pressure x-ray diffraction at liquid-helium temperature
- 1 October 1976
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 47 (10), 1275-1278
- https://doi.org/10.1063/1.1134506
Abstract
An apparatus for high pressure x‐ray diffraction at liquid‐He temperature is described that consists of a vessel capable of holding pressure up to 100 kilobar between Bridgman anvils immersed in liquid He in a cryostat. A technique is described for attachment of vacuum‐tight beryllium windows to the cryostat. With this apparatus, the superconducting transition temperature of Pb and its dependence on pressure were measured; the pressure was determined from the lattice parameter of NaCl on the basis of the equation of state for NaCl. The result can be used as a low temperature manometer.Keywords
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