Open Access
Table 1.
Characteristics of the MINERVE samples A1, A4, and A5. Each sample is composed of a stack of four UO2 pellets sealed in a zircaloy tube containing a nearly similar amount of Gd2O3, close to 3%.
| Sample characteristics | A1 | A4 | A5 | |
|---|---|---|---|---|
| Matrix | UO2 | UO2 | UO2 | |
| Number of pellets | 4 | 4 | 4 | |
| Pellet density | (g/cm3) | 10.30(3) | 10.27(1) | 10.32(2) |
| Pellet diameter | (mm) | 8.193(4) | 8.193(1) | 8.191(1) |
| Average pellet height | (mm) | 10.94(3) | 10.55(5) | 10.57(15) |
| 235U content | (%) | 5.06(1) | 5.1 | 4.95(1) |
| Gd2O3 content | (%) | 3.08 | 3.0 | 3.015 |
| Gd2O3 density | (g/cm3) | 0.317 | 0.308 | 0.311 |
| Microsphere diameter | (μm) | 15(10) | 195(10) | 380(19) |
| Number of microsphere in each pellet | 13962454 | 5955 | 814 | |
| Number of microsphere in the sample | 55849816 | 23820 | 3256 |
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