[2E01-07] Evaluation of physical properties of nuclear fuel

[2E01] Measurement of heat capacity on fluorite compounds

*Shun Hirooka¹, Taku Matsumoto¹, Kato Masato¹, Ryota Tsuchimochi¹, Masahiro Ogasawara² (1. JAEA, 2. Inspection Development Co.)

Keywords:heat capacity, actinide oxide, fluoride, fluorite compound

Heat capacity measurements were carried out on the fluorite compounds such as CaF₂ and actinide oxides by DSC up to 1400 C. Heat capacity data on fluorides was obtained up to nearly the melting temperature that is below 1500 C, and rapid increase attributed to the formation of Frenkel defect was observed at high temperature.