Si
Silicon
Z = 14 · Metalloid · 28.1 u
Nuclear Engineering Significance
Component of silicon carbide (SiC) being developed as advanced accident-tolerant fuel cladding and TRISO particle coating. Thermal absorption (σ_a = 0.171 b) is low. Present in concrete biological shielding and as an impurity specification element in structural alloys.
Basic properties
- Atomic number (Z)
- 14
- Standard atomic mass
- 28.1 u
- Category
- Metalloid
Isotopes & cross-section data
View in ALLEN →| Isotope | Mass (A) | Half-life | ZAID | Libraries | σ(E) |
|---|---|---|---|---|---|
| Si-28 | 28 | Stable | .80c.71c.70c | View → | |
| Si-29 | 29 | Stable | .80c.71c.70c | View → | |
| Si-30 | 30 | Stable | .80c.71c.70c | View → |