A compact design for measuring electrical conductivity at high pressures and varying temperatures

A compact device is described which is capable of measuring electrical conductivity of small foil samples by d.c. methods from liquid nitrogen temperatures to 675°K, and at pressures up to 9·0 GN m −2 (90 kb). High accuracy is claimed for the measured values of conductivity, temperature and pressure, and the design is suitable for use under α-active handling conditions. Because of the small overall scale the device can be manufactured for a low cost.