The High Temperature Heat Capacity of NpO2

The entalpy increments of pure NpO2 have been measured using drop calorimetry in the temperature range from 376 K to 1770 K. The heat capacity was derived using the obtained data constrained to 66,20 J.K-1.mol-1 at 298,15 K taken from published low temperature measurements: The heat capacity of NpO2 determined in this study is given by the following equation: Cp°(T) = 71,608 + 0,015845 (T/K) - 900648 (T/K)-2 J.K-1.mol-1JRC.E.3-Materials researc