[1A04-06] High Temperature Thermal Property of Oxide Fuel

[1A04] The bredig transition effect on the thermal conductivity of CaF₂

*Taku Matsumoto¹, Ryota Tsuchimochi¹, Shun Hirooka¹, Masato Kato¹, Josha Taylor White², Kenneth James McClellan² (1. Japan Atomic Energy Agency, 2. Los Alamos National Laboratory)

Keywords:Bredig transition, Thermal conductivity

The thermal diffusivity, thermal expansion and heat capacity of CaF₂ was measured with LFA, DIL and DSC up to 1250℃, then the thermal conductivity was evaluated. We evaluated how the Bredig transition which is one of the unique feature of fluorite structure affect on the thermal conductivity.