The effect of plutonium content on the thermal conductivity of (U, Pu)O2 solid solutions

The porosity dependence of the thermal conductivity for nuclear fuels

“…Frequently this several contributions in this journal considering equation is also attributed to Eucken 2,[4][5][6]10), how the thermal conductivity of U0 2, (UPU)02, owing to an erroneous quotation by Kingery 9). UN and (UTh)02 depends on porosity 1-6).…”

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…”

Investigation into the feasibility of alternative plutonium shipping forms

“…Effect of Moisture Gibby (1971) ~eported forming green pellets of mixed PuOz/UOz oxide by pressing at 20 tsi using only a small amount of moisture as lubricant and binder. The small amount of moisture was not quantified.…”