Oxygen potential of uranium--plutonium oxide as determined by controlled- atmosphere thermogravimetry

A science‐based mixed oxide property model for developing advanced oxide nuclear fuels

“…Except for the U 0.55 Pu 0.3 Am 0.15 O 2−x data, which was underestimated at approximately 30 kJ/molK, the data correlate well with σ = ± 20 kJ/mol for 906 data points. In Figure 3, the evaluation results of 3456 data are shown, and the data are represented with an uncertainty of σ = ± 36 kJ/mol 16–29 …”

“…The experimental data were measured using various methods. (A) R. E. Woodley, 16 (B) N. A. Javed et al., 17 (C) M. Tetenbaum, 18 (D) C. M. Mari et al., 36 (E) O. T. Sorensen, 37 (F) T. L. Markin et al., 20 (G) C. R. Chilton et al., 21 (H) C. R. Chilton et al., 22 (I) P. R. Vasudeva Rao, 26 (J) Dawar, 23 (K) Swanson, 24 (L) Adamson and Carnry, 29 (M) Markin et al., 38 (N) Woodley and Adamson, 39 (O) Atlas and Schlehman, 26 and (P) Swanson 40…”

“…In Figure 3, the evaluation results of 3456 data are shown, and the data are represented with an uncertainty of σ = ± 36 kJ/mol. [16][17][18][19][20][21][22][23][24][25][26][27][28][29] MOX is an intrinsic compound, and the electronic defect concentration is dominated near the stoichiometric composition. Figure 1 shows that the electronic defect concentration near the stoichiometric composition is higher at 45% Pu content MOX.…”

“…The sound speeds of actinide oxides were determined (Table 3). The 𝐶 𝑙 of UO 2 , NpO 2 , PuO 2 , and AmO 2 at 300 K were calculated to be 69.8, 70.0, 68.3, and TA B L E 3 Sound speeds of actinide oxide for Equations (24) and (25). 70.0 kJ/mol.K, respectively.…”