Thermal conductivity of stoichiometric (Pu, Nd)O2 and (Pu, Y)O2 solid solutions

Thermal conductivity measurement of (Pu1−xAmx)O2 (x=0.028, 0.072)

“…6 shows the measured thermal conductivities up to 1250 K together with literature data of PuO 2 [11][12][13] and UO 2 [10]. It was found that the thermal conductivities of Am3 and Am7-3 were larger than the PuO 2 literature data of Gibby [11] and Fukushima et al Microstructure observations were made with an optical microscope (Union Optical Co., Ltd.).…”

“…The thermal conductivities of PuO 2 as obtained from previous studies are illustrated in Fig. 1 together with UO 2 data [11][12][13]. It is found that there are the two types of thermal conductivity.…”

Effects of pressure on thermal transport in plutonium oxide powder

“…The PuO 2 solid thermal conductivity has been measured in a number of studies [15][16][17]; however, an expression that correlates these data as a function of temperature is unavailable. Also, the PuO 2 thermal conductivity data from these studies were measured at temperatures above 473 K, but we require solid thermal conductivities at temperatures as low as 323 K. Thus, we needed to develop a reliable expression for the temperature dependence of the thermal conductivity to predict the thermal conductivity at lower temperatures.…”

“…While Fukushima et al [16] and Gibby [15] used heat capacity values and temperature-dependent densities for PuO 2 , Lagedrost et al [17] estimated the PuO 2 heat capacities from UO 2 values. Since Lagedrost et al [17] provided their raw diffusivity data and new PuO 2 heat capacity values and densities are available from Carbajo et al [18], we recalculated the Lagedrost et al [17] thermal conductivity values to reflect the better known PuO 2 physical property data.…”

“…In the PuO 2 thermal conductivity studies [15][16][17], the thermal diffusivity of PuO 2 was measured and the thermal conductivity determined using the definition…”