Revision of high temperature and critical properties of cesium

The high-temperature equilibrium vapor and liquid phase densities of cesium reported previously from a tilting capsule'' test were recalculated with the aid of generalized mathematical relations for the phase densities, instead of a rectilinear diameters line extrapolated irom lower temperatures. The critical density and temperature found are 0.420 g/cc and 3686.0 deg R, respectively. In addition, the earlier high-temperature vapor pressure data and critical pressure of cesium by the pressure tube'' method were checked with the improved equipment now available, obtaining close reverification. The critical pressure was obtained as 1701.3 psia and the critical temperature by this independent method as 3699.1 deg R. Using the average critical temperature of 3692.1 plus or minus 8 deg R, the critical compressibility factor of cesium is calculated as 0.2177. (6 tables, 4 figures) (auth