F
Fluorine
Z = 9 · Halogen · 19.0 u
Nuclear Engineering Significance
Key component of molten salt fuels and coolants (FLiBe, FLiNaK). Very low thermal absorption (σ_a = 0.0096 b) makes it neutronically favorable. Fluorine chemistry is central to UF₆ used in uranium enrichment.
Basic properties
- Atomic number (Z)
- 9
- Standard atomic mass
- 19.0 u
- Category
- Halogen
Isotopes & cross-section data
| Isotope | Mass (A) | Half-life | ZAID | Libraries |
|---|---|---|---|---|
| F-19 | 19 | Stable | .80c.71c.70c |