2018 | AFC ACCOMPLISHMENTS 167 Figure 3. Micrograph of the U0.75Pu0.20Am0.03Np0.02O1.98 fuel irradiated at an average power of 321 W/cm. Compare the micrograph shown here to the porosity field calculation in Figure 2 for the offset case. Both figures show an elliptic- shaped central void offset from the geometric center.