Table 1 Pellet groups and general information relating to their manufacture, type, and composition.
Pellet Group | ID | Geometry | Subgroup notes/dopant type | Manufacturer | Year of manufacture | Diameter (mm) | Immersion density (g cm−3) | Geometric density (g cm−3) |
|---|---|---|---|---|---|---|---|---|
A | – | Annular | Pure UO2 | Westinghouse | 2018 | 14.50 ± 0.01 | 10.3 ± 0.02 | – |
B | 1 | Solid | Pure UO2 | Hiezl et al.53 | 2011 | 9.39 ± 0.00 | 10.69 ± 0.04 | 10.55 ± 0.03 |
2 | Doped - | 9.69 ± 0.00 | 9.82 ± 0.009 | 9.69 ± 0.04 | ||||
C | 1 | Solid | Pure UO2 | National Nuclear User Facility—UTGARD | 2023 | 10.42 ± 0.01 | – | 9.81 ± 0.10 |
2 | Lanthanide | 10.37 ± 0.01 | – | 9.93 ± 0.10 | ||||
3 | Grey-phase | 10.38 ± 0.01 | – | 8.90 ± 0.09 | ||||
4 | ε-particles | 10.48 ± 0.01 | – | 9.59 ± 0.10 |
