Ce
Cerium
Z = 58 · Lanthanide · 140.1 u
Nuclear Engineering Significance
Fission product with high yield. Ce-144 (t₁/₂ = 284.9 d) is a significant contributor to spent fuel activity in the first few years. CeO₂ is used as a surrogate for PuO₂ in fuel fabrication research due to similar crystal structure and properties.
Basic properties
- Atomic number (Z)
- 58
- Standard atomic mass
- 140.1 u
- Category
- Lanthanide
Isotopes & cross-section data
| Isotope | Mass (A) | Half-life | ZAID | Libraries |
|---|---|---|---|---|
| Ce-140 | 140 | Stable | .80c.71c | |
| Ce-142 | 142 | Stable | .80c.71c |