The results for Θ c ( T ) are compared with the calculations of Bernardes, Horton, and Leech, and Barron and Klein, based on Mie-Lennard-Jones potentials for the interaction energy between two atoms. This procedure gave Θ 0 c = 74.6 ± 1.0°K for neon and Θ 0 c = 64.0 ± 0.8°K for xenon. 1Ã, ° C constant pressure.mayerà ¢ æs relationship à ¢ æâ ² CV R where R is a gaseous constant. In the range 0.020 ≲ T Θ 0 c ≲ 0.505, the data were fitted with an expression of the form Θ c ( T ) = Θ 0 c + A T 2, where Θ 0 c is the Debye temperature at 0°K. Accalore specific molar with constant pressure (CP): It is the quantity of heat necessary to increase the temperature of 1 mole of a gas through 1K or 1Ã, ° C to a constant volume. On putting /3 0 as already explained, equation (1), by algebraic transformation and without any approximation, was altered into the form determined by Hydrogen and Helium Gas Thermometers. The results were analyzed to obtain the temperature dependence of the Debye temperature, Θ c ( T ). H0 +h,pressure at-temperature T, after all corrections have been made.
Carbon resistance thermometers were calibrated against a gas thermometer and the helium vapor-pressure scale. The specific heats of solid neon and xenon have been measured in the temperature range 1.5 to 24°K, using a calorimeter with a mechanical heat switch.